Initialize environment and add E2E tests with formatting

[AmelBawa-msft]

Summary of the Pull Request

• Added support for -e option in wslc run/create/exec
• Added E2E tests

PR Checklist

• Closes: Link to issue #xxx
• Communication: I've discussed this with core contributors already. If work hasn't been agreed, this work might be rejected
• Tests: Added/updated if needed and all pass
• Localization: All end user facing strings can be localized
• Dev docs: Added/updated if needed
• Documentation updated: If checked, please file a pull request on our docs repo and link it here: #xxx

Detailed Description of the Pull Request / Additional comments

Validation Steps Performed

[Copilot]

Pull request overview

This PR adds initial support for passing environment variables from the wslc CLI into container creation/run flows (via -e/--env) and introduces E2E coverage for the new CLI behavior.

Changes:

• Extend ContainerOptions to carry environment variables and populate it from CLI args (-e/--env).
• Plumb ContainerOptions.EnvironmentVariables into WSLAContainerLauncher during container creation/run.
• Add E2E tests validating container run environment variable propagation.

Reviewed changes

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

File	Description
test/windows/wslc/e2e/WSLCE2EContainerCreateTests.cpp	Adds E2E coverage for container run -e/--env and test setup/cleanup env initialization.
src/windows/wslc/tasks/ContainerTasks.cpp	Parses -e/--env arguments into ContainerOptions.EnvironmentVariables.
src/windows/wslc/services/ContainerService.cpp	Passes EnvironmentVariables into WSLAContainerLauncher for container creation.
src/windows/wslc/services/ContainerModel.h	Extends ContainerOptions with an environment variables list.

[Copilot]

Pull request overview

Adds WSLC support for passing environment variables into containers (via -e/--env and --env-file) and validates the behavior through new unit and end-to-end tests.

Changes:

• Extend container run/create argument definitions to accept repeated -e and --env-file.
• Parse/validate env entries (including key-only resolution from host env) and plumb them through ContainerOptions into WSLAContainerLauncher.
• Add new unit tests for env parsing and E2E coverage for env/env-file scenarios and precedence.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
test/windows/wslc/e2e/WSLCE2EContainerCreateTests.cpp	Adds E2E coverage for -e and --env-file behavior (including precedence and error cases).
test/windows/wslc/WSLCCLIEnvVarParserUnitTests.cpp	New unit tests for env var parsing and env-file parsing behavior.
src/windows/wslc/tasks/ContainerTasks.cpp	Parses --env-file and -e args into ContainerOptions.EnvironmentVariables.
src/windows/wslc/services/ContainerService.cpp	Passes environment variables to WSLAContainerLauncher during container create/run.
src/windows/wslc/services/ContainerModel.h	Adds ContainerOptions.EnvironmentVariables and declares EnvironmentVariable parsing helpers.
src/windows/wslc/services/ContainerModel.cpp	Implements env parsing and env-file parsing/validation.
src/windows/wslc/commands/ContainerRunCommand.cpp	Updates container run argument definitions to allow repeated env/env-file.
src/windows/wslc/commands/ContainerCreateCommand.cpp	Updates container create argument definitions to allow repeated env/env-file.

[Copilot]

Pull request overview

Copilot reviewed 10 out of 10 changed files in this pull request and generated 6 comments.

[Copilot]

Pull request overview

Copilot reviewed 10 out of 10 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.