pack: add prettier and reformat all codes

src/renderer/index.html

@@ -1,10 +1,10 @@
 <!DOCTYPE html>
 <html>
-    <head>
-        <meta charset="utf-8">
-    </head>
-    <body>
-        <div id="app"></div>
-    </body>
-    <script type="module" src="./main.ts"></script>
+  <head>
+    <meta charset="utf-8" />
+  </head>
+  <body>
+    <div id="app"></div>
+  </body>
+  <script type="module" src="./main.ts"></script>
 </html>