feat: Add Diff View and File History Tracking

- Implemented a new Diff view in the Workbench to track file changes
- Added file history tracking with version control and change tracking
- Created a FileModifiedDropdown to browse and manage modified files
- Enhanced ActionRunner to support file history persistence
- Updated Workbench and BaseChat components to support new diff view functionality
- Added support for inline and side-by-side diff view modes

.github/actions/setup-and-build/action.yaml

@@ -30,3 +30,7 @@ runs:
       run: |
         pnpm install
         pnpm run build
+
+    - name: Create history directory
+      shell: bash
+      run: mkdir -p .history