feat: initialize project with Docker, PostgreSQL, Redis, and Vue.js frontend

- Added docker-compose.yml for PostgreSQL and Redis services with health checks.
- Created frontend directory with initial Vue.js setup including package.json, vite.config.ts, and TypeScript configuration.
- Implemented main application structure with App.vue and HomePage.vue components.
- Added message fetching and posting functionality in HomePage.vue.
- Included necessary styles and scripts for Ionic framework integration.
- Developed a dev-stack script to manage Docker containers and run backend/frontend servers.

package.json

@@ -0,0 +1,10 @@
+{
+  "name": "xip",
+  "private": true,
+  "workspaces": ["frontend", "backend"],
+  "scripts": {
+    "dev:stack": "bun run scripts/dev-stack.ts",
+    "dev:backend": "bun run --cwd backend dev",
+    "dev:frontend": "bun run --cwd frontend dev"
+  }
+}