Install dart sdk

Author: mugikhan

.github/workflows/main.yml

@@ -19,9 +19,12 @@ jobs:
       - uses: actions/checkout@v3
         with:
           submodules: recursive
-      - name: Set up Homebrew
+      - name: Setup Homebrew
         id: set-up-homebrew
         uses: Homebrew/actions/setup-homebrew@master
+      - name: Setup Dart
+        id: setup-dart
+        uses: dart-lang/setup-dart@v1
       - name: Setup macOS
         if: runner.os == 'macOS'
         run: |