add workflows

.github/workflows/ci.yml

@@ -0,0 +1,26 @@
+name: continuous-integration
+
+on: [push, pull_request]
+
+
+jobs:
+  tests:
+    name: Tests
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+      - uses: Swatinem/rust-cache@v2
+      - run: cargo build --workspace
+      - run: cargo test --workspace --no-fail-fast
+
+  checks:
+    name: Check clippy, formatting, and documentation
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+      - uses: Swatinem/rust-cache@v2
+      - run: cargo clippy --workspace --all-targets --all-features
+      - run: cargo fmt --check --all
+      - run: cargo doc --workspace --no-deps