extract image assets for yomitan zip

src-tauri/tauri.conf.json

@@ -19,7 +19,11 @@
       }
     ],
     "security": {
-      "csp": null
+      "csp": "default-src 'self' ipc: http://ipc.localhost; img-src 'self' asset: http://asset.localhost",
+      "assetProtocol": {
+        "enable": true,
+        "scope": ["$APPDATA/yomitan/**"]
+      }
     }
   },
   "bundle": {