Feat/Trickle ice (#336)

* feat(cloud): Use Websocket signaling in cloud mode

* refactor: Enhance WebRTC signaling and connection handling

* refactor: Improve WebRTC connection management and logging in KvmIdRoute

* refactor: Update PeerConnectionDisconnectedOverlay to use Card component for better UI structure

* refactor: Standardize metric naming and improve websocket logging

* refactor: Rename WebRTC signaling functions and update deployment script for debug version

* fix: Handle error when writing new ICE candidate to WebRTC signaling channel

* refactor: Rename signaling handler function for clarity

* refactor: Remove old http local http endpoint

* refactor: Improve metric help text and standardize comparison operator in KvmIdRoute

* chore(websocket): use MetricVec instead of Metric to store metrics

* fix conflicts

* fix: use wss when the page is served over https

* feat: Add app version header and update WebRTC signaling endpoint

* fix: Handle error when writing device metadata to WebRTC signaling channel

---------

Co-authored-by: Siyuan Miao <i@xswan.net>

ui/package-lock.json

@@ -30,6 +30,7 @@
         "react-icons": "^5.4.0",
         "react-router-dom": "^6.22.3",
         "react-simple-keyboard": "^3.7.112",
+        "react-use-websocket": "^4.13.0",
         "react-xtermjs": "^1.0.9",
         "recharts": "^2.15.0",
         "tailwind-merge": "^2.5.5",
@@ -5180,6 +5181,11 @@
         "react-dom": ">=16.6.0"
       }
     },
+    "node_modules/react-use-websocket": {
+      "version": "4.13.0",
+      "resolved": "https://registry.npmjs.org/react-use-websocket/-/react-use-websocket-4.13.0.tgz",
+      "integrity": "sha512-anMuVoV//g2N76Wxqvqjjo1X48r9Np3y1/gMl7arX84tAPXdy5R7sB5lO5hvCzQRYjqXwV8XMAiEBOUbyrZFrw=="
+    },
     "node_modules/react-xtermjs": {
       "version": "1.0.9",
       "resolved": "https://registry.npmjs.org/react-xtermjs/-/react-xtermjs-1.0.9.tgz",