Add padding for icon (#98)

* Making 96x96(almost) with GIMP is toooo hard for me...

Padding in 128 will be done imagemagick

* I cannot be friend of GIMP...

assets/icons/3.edit_by_me/README.md

@@ -0,0 +1,14 @@
+## How to make the adjusted file
+
+Spec: https://developer.chrome.com/docs/webstore/images?hl=en#icons
+
+Fight with GIMP to crop 96x96
+
+And imagemagick
+
+```bash
+convert assets/icons/3.edit_by_me/from-icon-sadness-star-2024-03-25-3-96.png -gravity center -background white -extent 128x128 assets/icons/3.edit_by_me/from-icon-sadness-star-2024-03-25-3-128x128.png
+convert assets/icons/3.edit_by_me/from-icon-sadness-star-2024-03-25-3-128x128.png -transparent white assets/icons/3.edit_by_me/from-icon-sadness-star-2024-03-25-3-128x128-t.png
+```
+
+But the cropping is not perfect, having ugly edge...

scripts/build.ts

@@ -50,7 +50,7 @@ const gatherDist = Promise.all([
   Deno.copyFile('src/options.css', 'dist/options.css'),
   Deno.copyFile('vendor/primer.css', 'dist/primer.css'),
   Deno.copyFile(
-    'assets/icons/3.edit_by_me/from-icon-sadness-star-2024-03-25-gimp.png',
+    'assets/icons/3.edit_by_me/from-icon-sadness-star-2024-03-25-128x128-t.png',
     'dist/icon-sadness-star.png',
   ),
 ]);