feat(mcp): add Model Context Protocol integration

Add  MCP integration including:
- New MCP settings tab with server configuration
- Tool invocation UI components
- API endpoints for MCP management
- Integration with chat system for tool execution
- Example configurations

app/routes/api.mcp-check.ts

@@ -0,0 +1,16 @@
+import { createScopedLogger } from '~/utils/logger';
+import { MCPService } from '~/lib/services/mcpService';
+
+const logger = createScopedLogger('api.mcp-check');
+
+export async function loader() {
+  try {
+    const mcpService = MCPService.getInstance();
+    const serverTools = await mcpService.checkServersAvailabilities();
+
+    return Response.json(serverTools);
+  } catch (error) {
+    logger.error('Error checking MCP servers:', error);
+    return Response.json({ error: 'Failed to check MCP servers' }, { status: 500 });
+  }
+}