Add a GitHub CI

.github/dependabot.yml

@@ -0,0 +1,8 @@
+version: 2
+updates:
+- package-ecosystem: cargo
+  directory: "/"
+  schedule:
+    interval: daily
+    time: "03:30"
+  open-pull-requests-limit: 10

.github/workflows/ci.yml

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+name: ci
+on: [push, pull_request]
+
+jobs:
+  test:
+    name: Cargo build & test
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - 1.66.1
+          - 1.67.1
+          - 1.68.2
+          - 1.69.0
+          - 1.70.0
+          - 1.71.1
+          - 1.72.1
+          - 1.73.0
+          - 1.74.1
+          - 1.75.0
+          - 1.76.0
+          - 1.77.2
+          - stable
+          - beta
+          - nightly
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install Rust ${{ matrix.rust }}
+        run: rustup toolchain install ${{ matrix.rust }}
+      - name: Run cargo build
+        run: cargo +${{ matrix.rust }} build --verbose
+      - name: Run cargo test
+        run: cargo +${{ matrix.rust }} test --verbose
+  formatting:
+    name: Cargo fmt
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Update Rust
+        run: rustup update stable
+      - name: Run cargo fmt
+        run: cargo +stable fmt --all -- --check
+  clippy:
+    name: Clippy
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Update Rust
+        run: rustup update stable
+      - name: Run clippy
+        run: cargo +stable clippy --all-features
+  cargo-deny:
+    name: Check dependencies
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: EmbarkStudios/cargo-deny-action@v1