use leancodepl/mobile-tool for releasing (#712)

Author: bartekpacia

.github/workflows/publish.yaml

@@ -17,12 +17,35 @@ jobs:
         with:
           sdk: 2.17.0
 
+      - name: Install mobile-tools
+        uses: actions/checkout@v3
+        with:
+          repository: leancodepl/mobile-tools
+          path: mobile-tools
+
+      - name: Add mobile-tools to PATH
+        run: |
+          echo $GITHUB_WORKSPACE/mobile-tools/bin >> $GITHUB_PATH
+
       - name: Download pub.dev credentials
         env:
           CREDENTIALS: ${{ secrets.PUB_DEV_CREDENTIALS }}
         run: |
           mkdir -p ~/.pub-cache
           echo $CREDENTIALS > ~/.pub-cache/credentials.json
 
+      - name: Set version data
+        run: |
+          tag=${{ github.ref_name }}
+          echo "RELEASE_NOTES=$(link_changelog $tag)" >> $GITHUB_ENV
+          echo "IS_PRERELEASE=$(is_prerelease $tag)" >> $GITHUB_ENV
+
       - name: Publish
         run: dart pub publish -f
+
+      - name: Create release
+        uses: softprops/action-gh-release@v1
+        with:
+          name: ${{ github.ref_name }}
+          body: "[See changelog on pub.dev](${{ env.RELEASE_NOTES }})"
+          prerelease: ${{ env.IS_PRERELEASE }}