feat(init): add initial project scaffolding and database schema

- Add Dockerfile for multi-stage production build
- Add Drizzle configuration and initial migration for PostgreSQL schema
- Add project configuration files (.prettierrc, .prettierignore, .dockerignore)
- Define core database tables: assets, memberships, site_settings

drizzle.config.ts

@@ -0,0 +1,10 @@
+import { defineConfig } from 'drizzle-kit';
+
+export default defineConfig({
+	schema: './src/lib/server/db/schema.ts',
+	out: './drizzle',
+	dialect: 'postgresql',
+	dbCredentials: {
+		url: process.env.DATABASE_URL!
+	}
+});