Feat ContextProxy to improve state management

[samhvw8]

• Add ContextProxy class as a wrapper around VSCode's ExtensionContext
• Implement batched state updates for performance optimization
• Update ClineProvider to use ContextProxy instead of direct context access
• Add comprehensive test coverage for ContextProxy
• Extract SECRET_KEYS and GLOBAL_STATE_KEYS constants for better maintainability

Description

This feature will we can open multiple window (which can have different config (mode / api config))

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Checklist:

• My code follows the patterns of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation

Additional context

Related Issues

Reviewers

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Important

Introduces ContextProxy for efficient state management in ClineProvider, with batched updates and comprehensive testing.

• Behavior:
  • Introduces ContextProxy class in contextProxy.ts to buffer state changes and secrets, committing them on request or disposal.
  • Replaces direct context access in ClineProvider.ts with ContextProxy for efficient state management.
  • Extracts SECRET_KEYS and GLOBAL_STATE_KEYS constants in globalState.ts for maintainability.
• Testing:
  • Adds comprehensive tests for ContextProxy in contextProxy.test.ts.
  • Updates ClineProvider.test.ts to mock and test ContextProxy integration.
• Misc:
  • Updates ClineProvider to use ContextProxy for state and secret management, ensuring proper disposal and state handling.

^{This description was created by for dec624c. It will automatically update as commits are pushed.}

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