Add 3D character model integration and update dependencies

- Introduced a new CharacterModel3D component for rendering 3D character models in OverviewView.
- Updated package.json and package-lock.json to include 'three' library for 3D graphics support.
- Enhanced Vite configuration to allow access to external files and ensure proper handling of GLB/GLTF assets.
- Improved layout and styling in OverviewView for better visualization of character and avatar.

frontend/package-lock.json

@@ -21,6 +21,7 @@
         "dotenv": "^16.4.5",
         "mitt": "^3.0.1",
         "socket.io-client": "^4.8.1",
+        "three": "^0.182.0",
         "vue": "~3.4.31",
         "vue-i18n": "^10.0.0-beta.2",
         "vue-multiselect": "^3.1.0",
@@ -2834,6 +2835,12 @@
         "safe-buffer": "~5.2.0"
       }
     },
+    "node_modules/three": {
+      "version": "0.182.0",
+      "resolved": "https://registry.npmjs.org/three/-/three-0.182.0.tgz",
+      "integrity": "sha512-GbHabT+Irv+ihI1/f5kIIsZ+Ef9Sl5A1Y7imvS5RQjWgtTPfPnZ43JmlYI7NtCRDK9zir20lQpfg8/9Yd02OvQ==",
+      "license": "MIT"
+    },
     "node_modules/tinyglobby": {
       "version": "0.2.14",
       "resolved": "https://registry.npmjs.org/tinyglobby/-/tinyglobby-0.2.14.tgz",