feat(monitoring): add Prometheus metrics endpoint and Grafana dashboards

Add observability stack with @willsoto/nestjs-prometheus for /metrics endpoint,
Prometheus scraping config, and 4 auto-provisioned Grafana dashboards
(API overview, database, search, business metrics).

Co-Authored-By: Paperclip <noreply@paperclip.ing>

libs/mcp-servers/package.json

@@ -0,0 +1,30 @@
+{
+  "name": "@goodgo/mcp-servers",
+  "version": "0.1.0",
+  "private": true,
+  "main": "./src/index.ts",
+  "types": "./src/index.ts",
+  "scripts": {
+    "build": "tsc",
+    "typecheck": "tsc --noEmit",
+    "lint": "eslint src/",
+    "test": "vitest run --passWithNoTests"
+  },
+  "dependencies": {
+    "@modelcontextprotocol/sdk": "^1.12.1",
+    "zod": "^3.24.0"
+  },
+  "devDependencies": {
+    "@types/node": "^22.0.0",
+    "typescript": "^5.7.0",
+    "vitest": "^3.0.0"
+  },
+  "peerDependencies": {
+    "@nestjs/common": "^11.0.0",
+    "typesense": "^3.0.0"
+  },
+  "peerDependenciesMeta": {
+    "@nestjs/common": { "optional": true },
+    "typesense": { "optional": true }
+  }
+}