refactor: add analytics code for internal tracking

apps/OpenSignServer/package-lock.json

@@ -35,6 +35,7 @@
         "parse-server-s3-adapter": "^1.2.0",
         "pdf-lib": "^1.16.0",
         "pdfkit": "^0.13.0",
+        "posthog-node": "^3.6.2",
         "razorpay": "^2.8.6",
         "request": "^2.88.2"
       },
@@ -8373,6 +8374,47 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/posthog-node": {
+      "version": "3.6.2",
+      "resolved": "https://registry.npmjs.org/posthog-node/-/posthog-node-3.6.2.tgz",
+      "integrity": "sha512-tVIaShR3SxBx17AlAUS86jQTweKuJIFRedBB504fCz7YPnXJTYSrVcUHn5IINE2wu4jUQimQK6ihQr90Djrdrg==",
+      "dependencies": {
+        "axios": "^1.6.2",
+        "rusha": "^0.8.14"
+      },
+      "engines": {
+        "node": ">=15.0.0"
+      }
+    },
+    "node_modules/posthog-node/node_modules/axios": {
+      "version": "1.6.7",
+      "resolved": "https://registry.npmjs.org/axios/-/axios-1.6.7.tgz",
+      "integrity": "sha512-/hDJGff6/c7u0hDkvkGxR/oy6CbCs8ziCsC7SqmhjfozqiJGc8Z11wrv9z9lYfY4K8l+H9TpjcMDX0xOZmx+RA==",
+      "dependencies": {
+        "follow-redirects": "^1.15.4",
+        "form-data": "^4.0.0",
+        "proxy-from-env": "^1.1.0"
+      }
+    },
+    "node_modules/posthog-node/node_modules/follow-redirects": {
+      "version": "1.15.5",
+      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.15.5.tgz",
+      "integrity": "sha512-vSFWUON1B+yAw1VN4xMfxgn5fTUiaOzAJCKBwIIgT/+7CuGy9+r+5gITvP62j3RmaD5Ph65UaERdOSRGUzZtgw==",
+      "funding": [
+        {
+          "type": "individual",
+          "url": "https://github.com/sponsors/RubenVerborgh"
+        }
+      ],
+      "engines": {
+        "node": ">=4.0"
+      },
+      "peerDependenciesMeta": {
+        "debug": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/precond": {
       "version": "0.2.3",
       "resolved": "https://registry.npmjs.org/precond/-/precond-0.2.3.tgz",
@@ -8870,6 +8912,11 @@
         "queue-microtask": "^1.2.2"
       }
     },
+    "node_modules/rusha": {
+      "version": "0.8.14",
+      "resolved": "https://registry.npmjs.org/rusha/-/rusha-0.8.14.tgz",
+      "integrity": "sha512-cLgakCUf6PedEu15t8kbsjnwIFFR2D4RfL+W3iWFJ4iac7z4B0ZI8fxy4R3J956kAI68HclCFGL8MPoUVC3qVA=="
+    },
     "node_modules/safari-14-idb-fix": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/safari-14-idb-fix/-/safari-14-idb-fix-3.0.0.tgz",