feature: Provide KUKSA Companion App in Build PR Pipeline

Closes: #31
Signed-off-by: Andre Weber <andre.weber3@etas.com>

.github/workflows/build-pull-request.yaml

@@ -3,6 +3,36 @@ name: Validate pull request
 on:
   pull_request
 
+env:
+  GPR_USERNAME: ${{ github.actor }}
+  GPR_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
 jobs:
-  build-project:
+  validate-project:
     uses: ./.github/workflows/reusable-build-validation.yaml
+
+  build-project:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Setup Project
+        uses: ./.github/actions/setup-project
+
+      - name: Update Version
+        run: npm run bump-release # Updates the semantic version depending on the last commits e.g. feature / bugfix
+
+      - name: Set Snapshot Version
+        run: ./gradlew setSnapshotVersion # Do not chain this command because it writes into a file which needs to be re-read inside the next gradle command
+
+      - name: Build 'assembleDebug' with Gradle Wrapper
+        run: ./gradlew assembleDebug
+
+      - name: Archive .apk file
+        uses: actions/upload-artifact@v3
+        with:
+          name: kuksa_companion_app.snapshot.apk
+          path: app/build/outputs/apk/debug/app-debug.apk
+          if-no-files-found: error
+          retention-days: 14

.github/workflows/reusable-build-validation.yaml

@@ -4,7 +4,7 @@ on:
   workflow_call:
 
 jobs:
-  build-project:
+  validate-project:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4