flutter build workflow

Author: josiauh

.github/workflows/flutter_build.yml

@@ -0,0 +1,47 @@
+name: Flutter Build
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+
+    - name: Set up Flutter
+      uses: subosito/flutter-action@v2
+      with:
+        flutter-version: '2.10.0' # Specify the Flutter version you want to use
+
+    - name: Install dependencies
+      run: flutter pub get
+
+    - name: Build for ${{ matrix.os }}
+      run: |
+        if [ "${{ matrix.os }}" == "ubuntu-latest" ]; then
+          flutter build linux
+        elif [ "${{ matrix.os }}" == "macos-latest" ]; then
+          flutter build macos
+        elif [ "${{ matrix.os }}" == "windows-latest" ]; then
+          flutter build windows
+        fi
+
+    - name: Upload build artifacts
+      uses: actions/upload-artifact@v2
+      with:
+        name: build-${{ matrix.os }}
+        path: |
+          build/linux/x64/release/bundle/**
+          build/macos/Build/Products/Release/**
+          build/windows/runner/Release/**