feat: Implement admin router and orchestrator for managing profiles and builds

- Added `adminRouter` for handling profile management, including listing, upserting, and updating statuses.
- Introduced `BuildRunner` interface and `PnpmBuildRunner` class for executing build commands.
- Created `GatewayOrchestrator` to manage profile states, reconcile processes, and handle build queues.
- Implemented `Pm2ProcessManager` for managing processes using PM2.
- Developed `GatewayProfileRepository` for interacting with the database to manage profiles.
- Added utility functions for resolving workspace roots and managing process definitions.
- Included tests for profile reconciliation logic.

app/gateway-api/package.json

@@ -23,6 +23,7 @@
         "@trpc/server": "^11.4.4",
         "date-fns": "^4.1.0",
         "fastify": "^5.3.3",
+        "pm2": "^5.4.3",
         "redis": "^5.10.0",
         "zod": "^4.2.1"
     }