chore(.github): add android workflow

.github/workflows/android.yml

@@ -0,0 +1,29 @@
+on: [push, pull_request]
+
+name: CI
+
+jobs:
+  ci:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        # os: [windows-latest, ubuntu-latest, macos-latest]
+        os: [ubuntu-latest]
+        rust:
+          - stable
+          # - beta
+          # - nightly
+          # - 1.73.0 # MSRV
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: ${{ matrix.rust }}
+          targets: aarch64-linux-android, armv7-linux-androideabi
+          components: rustfmt, clippy
+      - name: install
+        run: cargo install cargo-ndk
+      - name: test
+        run: cargo ndk test --workspace