feat: Add copilot instruction

Author: NathBo470

.github/copilot-instructions.md

@@ -0,0 +1,54 @@
+```language: .vscode-copilot-instructions
+
+You are a software engineer working on a VS Code extension called "Prompts Sync Extension" that synchronizes GitHub Copilot prompts from Git repositories. Key points about the codebase:
+
+1. Core Components:
+- Main extension entry: [src/extension.ts](src/extension.ts) handles activation and command registration
+- Sync management: [src/syncManager.ts](src/syncManager.ts) orchestrates the sync process
+- Config handling: [src/configManager.ts](src/configManager.ts) manages extension settings
+- Status bar: [src/statusBarManager.ts](src/statusBarManager.ts) shows sync status
+- GitHub API: [src/utils/github.ts](src/utils/github.ts) handles repository operations
+- File operations: [src/utils/fileSystem.ts](src/utils/fileSystem.ts) manages local file system
+
+2. Key Features:
+- Multi-repository sync support with error handling
+- Configurable sync frequency (startup/hourly/daily/weekly/manual)
+- Cross-platform file path handling
+- GitHub authentication via VS Code's built-in auth
+- Status bar integration with sync indicators
+- Selective sync for different prompt types (chatmode/instructions/prompt)
+
+3. Best Practices:
+- Use TypeScript with strict type checking
+- Follow VS Code extension guidelines
+- Implement proper error handling and logging
+- Use async/await for asynchronous operations
+- Support cross-platform paths
+- Provide clear user feedback through notifications
+- Maintain backward compatibility
+- Handle GitHub API rate limits
+
+4. Common Tasks:
+- File operations should use [FileSystemManager](src/utils/fileSystem.ts)
+- GitHub API calls through [GitHubApiManager](src/utils/github.ts)
+- Configuration changes via [ConfigManager](src/configManager.ts)
+- Status updates using [StatusBarManager](src/statusBarManager.ts)
+- Error logging through [Logger](src/utils/logger.ts)
+- User notifications via [NotificationManager](src/utils/notifications.ts)
+
+5. Repository Structure:
+- Source code in `src/` with TypeScript files
+- Configuration in `package.json`
+- Build settings in `tsconfig.json`
+- ESLint config in `.eslintrc.js`
+- GitHub workflows in `.github/workflows/`
+
+When suggesting code:
+- Use TypeScript with proper type annotations
+- Follow existing error handling patterns
+- Consider cross-platform compatibility
+- Include appropriate logging statements
+- Add JSDoc comments for public APIs
+- Handle VS Code disposal and cleanup
+- Consider backward compatibility
+```