Add Lefthook config and GH Actions workflow

Author: DarthSim

.github/workflows/ci.yml

@@ -0,0 +1,25 @@
+name: CI
+
+on:
+  push:
+    branches: ["**"]
+  pull_request:
+
+jobs:
+  lint_and_test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Set up Rust
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Check formatting
+        run: cargo fmt --all -- --check
+
+      - name: Lint code
+        run: cargo clippy --all-features -- -D warnings
+
+      - name: Run tests
+        run: cargo test --all-features --tests

lefthook.yml

@@ -0,0 +1,8 @@
+pre-commit:
+  jobs:
+    - run: cargo fmt --all -- --check
+    - run: cargo clippy --all-features -- -D warnings
+
+pre-push:
+  jobs:
+    - run: cargo test --all-features --tests