ci: create format, build and cargo test github actions

.github/workflows/ci.yml

@@ -0,0 +1,49 @@
+name: CI
+
+on: [push,pull_request]
+
+env:
+  CARGO_TERM_COLOR: always
+  # By default, RUSTFLAGS with “-D warnings” turns “asm_const” warnings into errors.
+  RUSTFLAGS:
+
+jobs:
+  fmt:
+    name: Rustfmt all packages
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          components: rustfmt
+      - name: Rustfmt Check
+        uses: actions-rust-lang/rustfmt@v1
+
+  build-allwinner-rt:
+    name: Build allwinner-rt
+    needs: fmt
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        TARGET: [riscv64imac-unknown-none-elf]
+        TOOLCHAIN: [nightly]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          target: ${{ MATRIX.TARGET }}
+          toolchain: ${{ MATRIX.TOOLCHAIN }}
+      - name: Run build
+        run: cargo build -p allwinner-rt --target ${{ MATRIX.TARGET }}
+
+  test-allwinner-hal:
+    name: Test allwinner-hal
+    needs: fmt
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          toolchain: stable
+      - name: Run tests
+        run: cargo test