feat: add CI build and release workflows

This commit introduces two new GitHub Actions workflows:
- `build.yaml`: Configures a workflow for building the project on pushes to the `master` branch and on pull requests.
- `release.yaml`: Configures a workflow for releasing the project on tagged pushes, specifically for tags starting with 'v'. It builds the project, releases it using Gradle, and uploads the generated APK artifacts.

.github/workflows/build.yaml

@@ -0,0 +1,24 @@
+name: Build
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Set up JDK 11
+        uses: actions/setup-java@v2
+        with:
+          distribution: 'adopt'
+          java-version: '11'
+
+      - name: Build with Gradle
+        run: ./gradlew composeApp:buildDebug

.github/workflows/release.yaml

@@ -0,0 +1,32 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Set up JDK 11
+        uses: actions/setup-java@v2
+        with:
+          distribution: 'adopt'
+          java-version: '11'
+
+      - name: Build with Gradle
+        run: ./gradlew composeApp:buildDebug
+
+      - name: Gradle Release
+        run: ./gradlew composeApp:debug
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: app
+          path: composeApp/build/outputs/apk/debug/*.apk