add copy to clipboard and custom toolbar

package.json

@@ -19,7 +19,9 @@
     "next": "11.0.0",
     "prismjs": "^1.23.0",
     "react": "17.0.2",
+    "react-copy-to-clipboard": "^5.0.3",
     "react-dom": "17.0.2",
+    "react-hot-toast": "^2.0.0",
     "react-markdown": "^6.0.2",
     "react-pdf": "^5.3.0",
     "react-player": "^2.9.0",
@@ -32,6 +34,7 @@
   "devDependencies": {
     "@types/prismjs": "^1.16.5",
     "@types/react": "17.0.11",
+    "@types/react-copy-to-clipboard": "^5.0.0",
     "@types/react-dom": "^17.0.8",
     "@types/react-pdf": "^5.0.4",
     "@types/react-syntax-highlighter": "^13.5.1",