👷: add gitea workflow

.gitea/workflows/check.yml

@@ -0,0 +1,20 @@
+---
+
+name: rust-check
+
+on:  # yamllint disable-line rule:truthy
+  - push
+
+jobs:
+  rust-check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: "clippy,rustfmt"
+      - run: cargo fmt -- --check
+      - run: cargo check
+      - run: cargo clippy -- -D warnings
+      - run: cargo test
+      - run: cargo build