core&ui: support reaction

packages/hydrooj/package.json

@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "3.4.6",
+    "version": "3.4.7",
     "bin": "bin/hydrooj.js",
     "main": "src/loader",
     "module": "src/loader",
@@ -20,6 +20,8 @@
         "cac": "^6.7.12",
         "cookies": "^0.8.0",
         "detect-browser": "^5.3.0",
+        "emoji-regex": "^10.0.0",
+        "emojis-list": "2.1.0",
         "esbuild": "0.14.3",
         "fs-extra": "^10.0.0",
         "graphql": "^16.3.0",