feat: initial ImportEx API setup with Hono + Drizzle + PostgreSQL

- Hono server with CORS and logging middleware
- Drizzle ORM with PostgreSQL schema (users table)
- Environment config with Zod validation
- Dockerfile for production deployment
- Gitea Actions workflows for dev/main deployment to Coolify
- Health check route

drizzle.config.ts

@@ -0,0 +1,11 @@
+import { defineConfig } from "drizzle-kit";
+import { env } from "./src/config/env";
+
+export default defineConfig({
+  schema: "./src/db/schema/index.ts",
+  out: "./drizzle",
+  dialect: "postgresql",
+  dbCredentials: {
+    url: env.DATABASE_URL,
+  },
+});