feat(cli): add initial CLI implementation with argument parsing and prompt handling

- Created package.json and package-lock.json for CLI package.
- Implemented argument parsing in args.ts to handle various flags and commands.
- Developed main CLI logic in cli.ts to execute commands and handle errors.
- Added configuration loading from a JSON file in config.ts, with environment variable support.
- Implemented prompt resolution and provider interaction in prompt.ts.
- Added usage documentation for the CLI.
- Configured TypeScript settings in tsconfig.json for the CLI package.
- Updated README in vscode package to reflect the new CLI functionality.
- Refactored root tsconfig.json to streamline project structure.

.gitea/workflows/preview.yml

@@ -23,21 +23,26 @@ jobs:
 
       - name: Install dependencies
         run: npm ci
+        working-directory: packages/chrome
 
       - name: Type check
         run: npm run typecheck
+        working-directory: packages/chrome
 
       - name: Run unit tests
         run: npm test -- --run
+        working-directory: packages/chrome
 
       - name: Build extension
         run: npm run build
+        working-directory: packages/chrome
 
       - name: Package preview ZIP
         run: |
           PR_NUM=${{ gitea.event.pull_request.number }}
-          zip -r lexai-pr-${PR_NUM}-preview.zip .output/chrome-mv3/
+          zip -r ../../lexai-pr-${PR_NUM}-preview.zip .output/chrome-mv3/
           echo "✅ PR #${PR_NUM} build successful"
+        working-directory: packages/chrome
 
       - name: Comment on PR
         run: |