feat: add fullstack TypeScript template with Docker support

- Created package.json for managing workspaces (frontend and backend)
- Added scripts for development, build, testing, and Docker operations
- Implemented kill-dev-processes.sh script to terminate development processes gracefully

.vscode/keybindings.json

@@ -0,0 +1,7 @@
+[
+  {
+    "key": "ctrl+shift+q",
+    "command": "workbench.action.tasks.runTask",
+    "args": "🛑 Cleanup Development Processes"
+  }
+]