Add CI workflow

.forgejo/workflows/check.yaml

@@ -0,0 +1,27 @@
+name: check
+
+on:
+  push:
+    branches: [master]
+  pull_request_target:
+
+jobs:
+  build:
+    runs-on: docker
+    steps:
+      - uses: https://code.forgejo.org/actions/checkout@v4
+      - uses: https://github.com/actions-rust-lang/setup-rust-toolchain@fb51252c7ba57d633bc668f941da052e410add48
+      - name: clippy
+        run: cargo build
+
+  check:
+    runs-on: docker
+    steps:
+      - uses: https://code.forgejo.org/actions/checkout@v4
+      - uses: https://github.com/actions-rust-lang/setup-rust-toolchain@fb51252c7ba57d633bc668f941da052e410add48
+        with:
+          components: clippy, rustfmt
+      - name: clippy
+        run: cargo clippy -- -D warnings
+      - name: rustfmt
+        run: cargo fmt --all -- --check