Refactor: Use @simpleworkjs/conf for configuration

- Replace ENV vars with proper config system
- Add conf/ directory with base, development, production, secrets
- Add secrets.example.js template
- Update .gitignore for secrets.js
- Show environment in startup banner

package.json

@@ -14,19 +14,20 @@
     "preview": "vite preview"
   },
   "dependencies": {
+    "@simpleworkjs/conf": "^1.0.0",
+    "eventsource": "^2.0.2",
     "express": "^4.18.2",
     "express-session": "^1.17.3",
     "http-proxy-middleware": "^2.0.6",
     "ldapjs": "^3.0.7",
     "uuid": "^9.0.0",
-    "ws": "^8.16.0",
-    "eventsource": "^2.0.2"
+    "ws": "^8.16.0"
   },
   "devDependencies": {
-    "vite": "^5.0.12",
-    "concurrently": "^8.2.2"
+    "concurrently": "^8.2.2",
+    "vite": "^5.0.12"
   },
   "engines": {
     "node": ">=18.0.0"
   }
-}
+}