added github action for building app

.github/workflows/build.yml

@@ -0,0 +1,22 @@
+on: push
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - shell: bash
+        run: ./gradlew lintDebug
+  assemble:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - shell: bash
+        run: ./gradlew assembleRelease
+      - shell: bash
+        run: ./gradlew bundleRelease
+      - if: startsWith(github.ref, 'refs/tags/v')
+        uses: softprops/action-gh-release@v1
+        with:
+          files: |
+            app/build/outputs/apk/release/*-release-unsigned.apk
+            app/build/outputs/bundle/release/*-release.aab