👷 Add workflows

Author: AlexV525

.github/workflows/build_test.yml

@@ -0,0 +1,45 @@
+name: Build test
+
+on: [push, pull_request]
+
+jobs:
+  test_iOS:
+    name: Test iOS on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [macos-latest]
+    steps:
+      - uses: actions/checkout@v1
+      - uses: actions/setup-java@v1
+        with:
+          java-version: '8.x'
+      - uses: subosito/flutter-action@v1
+        with:
+          channel: 'stable'
+      - run: dart --version
+      - run: flutter --version
+      - run: flutter pub get
+      - run: flutter analyze lib example/lib
+      - run: cd example; flutter build ios --no-codesign
+
+  test_android:
+    name: Test android on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+    steps:
+      - uses: actions/checkout@v1
+      - uses: actions/setup-java@v1
+        with:
+          java-version: '8.x'
+      - uses: subosito/flutter-action@v1
+        with:
+          channel: 'stable'
+      - run: dart --version
+      - run: flutter --version
+      - run: flutter pub get
+      - run: flutter analyze lib example/lib
+      - run: sudo echo "y" | sudo $ANDROID_HOME/tools/bin/sdkmanager "ndk;20.0.5594570"
+      - run: cd example; flutter build apk --debug

.github/workflows/pub_dry_run.yml

@@ -0,0 +1,19 @@
+name: Pub Publish dry run
+
+on: [push]
+
+jobs:
+  publish:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+      - name: Publish
+        uses: sakebook/[email protected]
+        with:
+          credential: ${{ secrets.CREDENTIAL_JSON }}
+          flutter_package: true
+          skip_test: true
+          dry_run: true

.github/workflows/pub_publish.yml

@@ -0,0 +1,21 @@
+name: Pub Publish plugin
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  publish:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+      - name: Publish
+        uses: sakebook/[email protected]
+        with:
+          credential: ${{ secrets.CREDENTIAL_JSON }}
+          flutter_package: true
+          skip_test: true
+          dry_run: false