Remove unused imports, packages and add lang

package-lock.json

@@ -13,8 +13,7 @@
         "node-fetch": "^3.2.0",
         "phosphor-react": "^1.3.1",
         "react": "17.0.2",
-        "react-dom": "17.0.2",
-        "swr": "^1.1.2"
+        "react-dom": "17.0.2"
       },
       "devDependencies": {
         "@types/color": "^3.0.3",
@@ -3351,14 +3350,6 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
-    "node_modules/swr": {
-      "version": "1.2.2",
-      "resolved": "https://registry.npmjs.org/swr/-/swr-1.2.2.tgz",
-      "integrity": "sha512-ky0BskS/V47GpW8d6RU7CPsr6J8cr7mQD6+do5eky3bM0IyJaoi3vO8UhvrzJaObuTlGhPl2szodeB2dUd76Xw==",
-      "peerDependencies": {
-        "react": "^16.11.0 || ^17.0.0 || ^18.0.0"
-      }
-    },
     "node_modules/table": {
       "version": "6.8.0",
       "resolved": "https://registry.npmjs.org/table/-/table-6.8.0.tgz",
@@ -5973,12 +5964,6 @@
       "integrity": "sha512-ot0WnXS9fgdkgIcePe6RHNk1WA8+muPa6cSjeR3V8K27q9BB1rTE3R1p7Hv0z1ZyAc8s6Vvv8DIyWf681MAt0w==",
       "dev": true
     },
-    "swr": {
-      "version": "1.2.2",
-      "resolved": "https://registry.npmjs.org/swr/-/swr-1.2.2.tgz",
-      "integrity": "sha512-ky0BskS/V47GpW8d6RU7CPsr6J8cr7mQD6+do5eky3bM0IyJaoi3vO8UhvrzJaObuTlGhPl2szodeB2dUd76Xw==",
-      "requires": {}
-    },
     "table": {
       "version": "6.8.0",
       "resolved": "https://registry.npmjs.org/table/-/table-6.8.0.tgz",