feat: Implement Prometheus metrics exposure in SmartMetrics

- Added Prometheus gauges for CPU and memory metrics.
- Implemented HTTP server to expose metrics at /metrics endpoint.
- Created methods to enable and disable the Prometheus endpoint.
- Updated getMetrics() to set gauge values.
- Added tests for Prometheus metrics functionality.
- Updated documentation plan for Prometheus integration.

package.json

@@ -8,17 +8,16 @@
   "author": "Lossless GmbH",
   "license": "MIT",
   "scripts": {
-    "test": "(tstest test/ --web)",
+    "test": "(tstest test/ --verbose)",
     "build": "(tsbuild --web)",
     "buildDocs": "tsdoc"
   },
   "devDependencies": {
-    "@gitzone/tsbuild": "^2.1.66",
-    "@gitzone/tsbundle": "^2.0.8",
-    "@gitzone/tsrun": "^1.2.44",
-    "@gitzone/tstest": "^1.0.77",
-    "@push.rocks/tapbundle": "^5.0.12",
-    "@types/node": "^20.4.8"
+    "@git.zone/tsbuild": "^2.6.4",
+    "@git.zone/tsbundle": "^2.0.8",
+    "@git.zone/tsrun": "^1.2.44",
+    "@git.zone/tstest": "^2.3.1",
+    "@types/node": "^22.15.30"
   },
   "browserslist": [
     "last 1 chrome versions"
@@ -40,8 +39,8 @@
     "@push.rocks/smartlog": "^3.0.2",
     "@types/pidusage": "^2.0.2",
     "pidtree": "^0.6.0",
-    "pidusage": "^3.0.2",
-    "prom-client": "^14.2.0"
+    "pidusage": "^4.0.1",
+    "prom-client": "^15.1.3"
   },
   "type": "module",
   "keywords": [
@@ -64,5 +63,6 @@
   "repository": {
     "type": "git",
     "url": "https://code.foss.global/push.rocks/smartmetrics.git"
-  }
-}
+  },
+  "packageManager": "pnpm@10.11.0+sha512.6540583f41cc5f628eb3d9773ecee802f4f9ef9923cc45b69890fb47991d4b092964694ec3a4f738a420c918a333062c8b925d312f42e4f0c263eb603551f977"
+}