fix: update copilot instructions for icon naming convention and add workflow_dispatch trigger in build.yml

Author: codeAbinash

.github/copilot-instructions.md

@@ -2,8 +2,8 @@
 
 - Do not add unnecessary comments for my understanding.
 
-- Icons are used from hugeicons if you want to add extra icons to the library, you can add it running `ic iconName` command.
-  `iconName` is from the hugeicons website.
+- Icons are used from hugeicons if you want to add extra icons to the library, you can add it running `ic icon-name` command.
+  `icon-name` is from the hugeicons website. Always use hyphen `-` to separate words in icon names.
 
 - No need to fix formatting related issues.
 

.github/workflows/build.yml

@@ -2,6 +2,7 @@ on:
   push:
     branches:
       - main
+  workflow_dispatch:
 
 jobs:
   build: