Add GitHub Actions CI.

.github/workflows/ci.yml

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+name: CI
+
+on:
+  pull_request:
+
+env:
+  RUBY_VERSION: 2.7.2
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        java-version:
+          - 8
+        api-version:
+          - 22
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Validate Gradle Wrapper
+        uses: gradle/wrapper-validation-action@v1
+
+      - name: Prepare Cache
+        run: |
+          rm -f  ~/.gradle/caches/modules-2/modules-2.lock
+          rm -fr ~/.gradle/caches/*/plugin-resolution/
+
+      - name: Cache Gradle Files
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+          key: v1-${{ runner.os }}-gradle-${{ matrix.java-version }}-${{ hashFiles('**/*.gradle', '**/gradle-wrapper.properties') }}
+          restore-keys: |
+            v1-${{ runner.os }}-gradle-${{ matrix.java-version }}-
+
+      - name: AVD cache
+        uses: actions/cache@v3
+        id: avd-cache
+        with:
+          path: |
+            ~/.android/avd/*
+            ~/.android/adb*
+          key: avd-${{ matrix.api-version }}
+
+      - name: Create AVD and generate snapshot for caching
+        if: steps.avd-cache.outputs.cache-hit != 'true'
+        uses: reactivecircus/android-emulator-runner@v2
+        with:
+          api-level: ${{ matrix.api-version }}
+          force-avd-creation: false
+          emulator-options: -no-window -gpu swiftshader_indirect -noaudio -no-boot-anim -camera-back none
+          disable-animations: false
+          script: echo "Generated AVD snapshot for caching."
+
+      - name: Configure Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ env.RUBY_VERSION }}
+          bundler-cache: true
+
+      - name: Configure JDK
+        uses: actions/setup-java@v3
+        with:
+          distribution: 'zulu'
+          java-version: ${{ matrix.java-version }}
+
+      - name: Connected Tests
+        uses: reactivecircus/android-emulator-runner@v2
+        with:
+          api-level: ${{ matrix.api-version }}
+          force-avd-creation: false
+          emulator-options: -no-snapshot-save -no-window -gpu swiftshader_indirect -noaudio -no-boot-anim -camera-back none
+          disable-animations: true
+          script: |
+            adb uninstall com.livefront.bridgesample
+            ./gradlew connectedAndroidTest
+
+      - name: Unit Tests
+        run: ./gradlew testReleaseUnitTest

.ruby-version

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+2.7.2

Gemfile

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+# frozen_string_literal: true
+source "https://rubygems.org"
+
+ruby "2.7.2"

Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+
+RUBY VERSION
+   ruby 2.7.2p137
+
+BUNDLED WITH
+   2.3.18