Add GitHub workflows and Dependabot config

.github/dependabot.yml

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+version: 2
+updates:
+  - package-ecosystem: "gradle"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/workflows/auto-merge.yml

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+name: Enable Auto Merge
+on: pull_request
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  auto-merge:
+    runs-on: ubuntu-latest
+    if: ${{ github.actor == 'wbrawner' || github.actor == 'dependabot[bot]' }}
+    steps:
+      - name: Enable auto-merge for Dependabot PRs
+        run: gh pr merge --auto --rebase "$PR_URL"
+        env:
+          PR_URL: ${{github.event.pull_request.html_url}}
+          GH_TOKEN: ${{secrets.GH_TOKEN}}
+

.github/workflows/test.yml

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+name: Test
+
+on:
+  pull_request:
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    name: Validate
+    steps:
+      - uses: actions/checkout@v2
+      - name: set up JDK
+        uses: actions/setup-java@v3
+        with:
+          distribution: 'zulu'
+          java-version: '17'
+      - name: Validate Gradle Wrapper
+        uses: gradle/wrapper-validation-action@v1
+  unit_test:
+    name: Run Unit Tests
+    runs-on: ubuntu-latest
+    needs:
+      - validate
+    steps:
+      - name: Run unit tests
+        uses: gradle/gradle-build-action@v2
+        with:
+          arguments: testPlayDebugUnitTest
+      - name: Publish JUnit Results
+        uses: dorny/test-reporter@v1
+        if: always()
+        with:
+          name: Unit Test Results
+          path: "*/build/test-results/*/*.xml"
+          reporter: java-junit
+          fail-on-error: true
+  ui_tests:
+    runs-on: ubuntu-latest
+    name: Run UI Tests
+    needs:
+      - validate
+    steps:
+      - name: Build with Gradle
+        uses: gradle/gradle-build-action@v2
+        with:
+          arguments: assemblePlayDebug assemblePlayDebugAndroidTest
+      - name: Grant execute permission for flank_auth.sh
+        run: chmod +x flank_auth.sh
+      - name: Add auth for flank
+        env:
+          GCLOUD_KEY: ${{ secrets.GCLOUD_KEY }}
+        run: |
+          ./flank_auth.sh
+      - name: Run UI tests
+        uses: gradle/gradle-build-action@v2
+        with:
+          arguments: runFlank