Add loading between pages

package.json

@@ -16,6 +16,7 @@
     "mdx-embed": "^0.0.17",
     "next": "10.0.4",
     "next-mdx-remote": "^2.1.1",
+    "nprogress": "^0.2.0",
     "prism-react-renderer": "^1.1.1",
     "react": "17.0.1",
     "react-dom": "17.0.1",
@@ -24,6 +25,7 @@
   },
   "devDependencies": {
     "@types/node": "^14.14.19",
+    "@types/nprogress": "^0.2.0",
     "@types/react": "^17.0.0",
     "@types/react-typing-animation": "^1.6.2",
     "@types/styled-components": "^5.1.7",