refactor(@angular/cli): Change modernize MCP to invoke schematics directly

[amishne]

Made the modernize MCP tool invoke schematics directly. Tested locally, example of it working with gemini-cli:

> Perform signals migration on all the `@Input`s.

╭───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ ✓  modernize (angular-cli MCP Server) {"transformations":["signal-input-migration"],"directories":["/Users/amishne/GitHub/llm-evals/environments/modernize/p… │
│                                                                                                                                                               │
│    {                                                                                                                                                          │
│      "instructions": [                                                                                                                                        │
│        "Migration signal-input-migration on directory src completed successfully."                                                                            │
│      ],                                                                                                                                                       │
│      "stdout": "    Preparing analysis for: tsconfig.app.json...\n    Scanning for inputs: tsconfig.app.json...\n    \n    Processing analysis data between   │
│    targets...\n    \n    Running migration for: tsconfig.app.json...\n    \n    Successfully migrated to signal inputs 🎉\n      -> Migrated 4/6              │
│    inputs.\nUPDATE src/app/hex-to-rgb/rgb-display.component.ts (268 bytes)\nUPDATE src/app/contrast-checker/color-picker.component.ts (557 bytes)\nUPDATE     │
│    src/app/color-palette/color-palette.component.ts (829 bytes)\n",                                                                                           │
│      "stderr": "    To see why 2 inputs couldn't be migrated\n    consider re-running with \"--insert-todos\" or \"--best-effort-mode\".\n"                   │
│    }                                                                                                                                                          │
╰───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
✦ I have migrated 4 of 6 inputs to the new signal syntax. To continue, I will now migrate view and content queries.
╭───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ ✓  modernize (angular-cli MCP Server) {"directories":["/Users/amishne/GitHub/llm-evals/environments/modernize/project/src"],"transformations":["signal-queri… │
│                                                                                                                                                               │
│    {                                                                                                                                                          │
│      "instructions": [                                                                                                                                        │
│        "Migration signal-queries-migration on directory src completed successfully."                                                                          │
│      ],                                                                                                                                                       │
│      "stdout": "    Preparing analysis for: tsconfig.app.json...\n    Scanning for queries: tsconfig.app.json...\n    \n    Processing analysis data between  │
│    targets...\n    \n    Running migration for: tsconfig.app.json...\n    \n    Successfully migrated to signal queries 🎉\n    \n    Successfully migrated   │
│    to signal queries 🎉\n      -> Migrated 1/1 queries.\nUPDATE src/app/color-guesser/color-guesser.component.ts (1983 bytes)\n",                             │
│      "stderr": ""                                                                                                                                             │
│    }                                                                                                                                                          │
╰───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
✦ The queries have been migrated. Next, I will migrate component outputs.
╭───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ ✓  modernize (angular-cli MCP Server) {"transformations":["output-migration"],"directories":["/Users/amishne/GitHub/llm-evals/environments/modernize/project… │
│                                                                                                                                                               │
│    {                                                                                                                                                          │
│      "instructions": [                                                                                                                                        │
│        "Migration output-migration on directory src completed successfully."                                                                                  │
│      ],                                                                                                                                                       │
│      "stdout": "    Preparing analysis for: tsconfig.app.json...\n    Scanning for outputs: tsconfig.app.json...\n    \n    Processing analysis data between  │
│    targets...\n    \n    \n    Successfully migrated to outputs as functions 🎉\n      -> Migrated 1 out of 1 detected outputs (100.00 %).\nUPDATE            │
│    src/app/color-guesser/guess-input.component.ts (932 bytes)\n",                                                                                             │
│      "stderr": ""                                                                                                                                             │
│    }                                                                                                                                                          │
╰───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
✦ All signal-related migrations are now complete.

[clydin]

This PR was merged into the repository. The changes were merged into the following branches:

• main: ce3fa2c
• 21.0.x: 7c24dda

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