feat: support "help" as a subcommand synonymous with "--help" #868

[dhruveshmishra]

Added support for using help as a subcommand in the CLI.

Closes #868

What this does
Now the following commands work:

linode-cli instance help
linode-cli help instance

Both behave the same as using --help.

Why
While using different CLIs, I often find myself typing help as a subcommand instead of --help. Many tools like git and aws support this pattern, so adding it here makes the CLI a bit more intuitive and user-friendly.

Implementation
This is handled by checking for help in the arguments early and mapping it to --help. The change is minimal and doesn’t affect existing functionality.

Notes
If there’s a preferred way to handle this at the parser level instead of rewriting argv, I’m happy to update the implementation.

[Copilot]

Pull request overview

Adds support for using help as a CLI subcommand (e.g., linode-cli instance help, linode-cli help instance) by translating help into --help early in argument handling.

Changes:

• Rewrites sys.argv when help is detected at the beginning or end of the argument list.
• Adds a subprocess-based pytest to validate instance help behavior.
• Introduces a package-lock.json file.

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 4 comments.

File	Description
linodecli/cli.py	Adds early argument rewriting to map help to --help.
tests/test_help_alias.py	Adds an end-to-end style test that invokes the module and checks help output.
package-lock.json	Adds a Node lockfile (currently empty).

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[mgwoj]

Please follow the CoPilot suggestions

[dhruveshmishra]

@mgwoj there are a little bit changes from co- pilot which ai gives unnessesary for the expansion of code the solution i had done covered the main portion which fix the issue so please consider it as a corrected code