ci: add github actions build workflow

.github/workflows/build.yml

@@ -0,0 +1,49 @@
+name: Build and Test
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: '1.21'
+
+      - name: Install dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y android-sdk
+          wget https://github.com/skylot/jadx/releases/download/v1.4.3/jadx-1.4.3.zip
+          unzip jadx-1.4.3.zip
+          sudo mv jadx/bin/jadx /usr/local/bin/
+          sudo mv jadx/bin/jadx-gui /usr/local/bin/
+
+      - name: Build
+        run: |
+          go mod tidy
+          go build -v ./...
+
+      - name: Test
+        run: go test -v ./...
+
+      - name: Create Release Artifact
+        if: github.event_name == 'push'
+        run: |
+          mkdir dist
+          go build -o dist/apkx ./cmd/apkx/main.go
+          zip -r apkx-${{ github.sha }}.zip dist/*
+
+      - name: Upload Artifact
+        if: github.event_name == 'push'
+        uses: actions/upload-artifact@v3
+        with:
+          name: apkx-build
+          path: apkx-*.zip