restore: add CI workflow back

Author: echobt

.github/workflows/ci.yml

@@ -0,0 +1,52 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  check:
+    name: Check
+    runs-on: blacksmith-4cpu-ubuntu-2204
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+      - run: cargo check --workspace --all-features
+
+  test:
+    name: Test
+    runs-on: blacksmith-4cpu-ubuntu-2204
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+      - run: cargo test --workspace --all-features
+
+  fmt:
+    name: Rustfmt
+    runs-on: blacksmith-4cpu-ubuntu-2204
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rustfmt
+      - run: cargo fmt --all -- --check
+
+  clippy:
+    name: Clippy
+    runs-on: blacksmith-4cpu-ubuntu-2204
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: clippy
+      - run: cargo clippy --workspace --all-features -- -D warnings
+
+  docs:
+    name: Docs
+    runs-on: blacksmith-4cpu-ubuntu-2204
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+      - run: cargo doc --workspace --all-features --no-deps