Add CI

.github/depandabot.yml

@@ -0,0 +1,6 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/workflows/test.yml

@@ -0,0 +1,40 @@
+name: Test
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  test:
+    name: cargo test
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        rust: [1.78.0, beta, nightly]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          toolchain: ${{ matrix.rust }}
+          cache: true
+
+      - name: Run tests
+        run: cargo test --all-features
+
+  formatting:
+    name: cargo fmt
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          components: rustfmt
+
+      - name: Rustfmt Check
+        uses: actions-rust-lang/rustfmt@v1