Adding "dump" controller and fixing issue with groups in PositionNotifier by delegating the PositionNotifier.updatePosition call to groups themselves

back/package.json

@@ -38,6 +38,7 @@
   "dependencies": {
     "axios": "^0.20.0",
     "body-parser": "^1.19.0",
+    "circular-json": "^0.5.9",
     "express": "^4.17.1",
     "generic-type-guard": "^3.2.0",
     "google-protobuf": "^3.13.0",
@@ -51,6 +52,7 @@
     "uuidv4": "^6.0.7"
   },
   "devDependencies": {
+    "@types/circular-json": "^0.4.0",
     "@types/express": "^4.17.4",
     "@types/google-protobuf": "^3.7.3",
     "@types/http-status-codes": "^1.2.0",