Add migration script for database updates and seeding

Adds a new `migrate` script to the API server package.json and updates the docker-compose.yml to use this script for database migrations and seeding. Also updates the README.md to reflect the new migration command.

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artifacts/api-server/package.json

@@ -9,7 +9,8 @@
     "start": "node --enable-source-maps ./dist/index.mjs",
     "typecheck": "tsc -p tsconfig.json --noEmit",
     "test:wait": "node ./scripts/wait-for-server.mjs",
-    "test": "node --test 'tests/**/*.test.mjs'"
+    "test": "node --test 'tests/**/*.test.mjs'",
+    "migrate": "pnpm --filter @workspace/db run push && pnpm --filter scripts run seed"
   },
   "dependencies": {
     "@aws-sdk/client-s3": "^3.658.0",