Replace Travis CI with GitHub Actions

.github/workflows/main.yml

@@ -0,0 +1,54 @@
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+name: CI
+
+jobs:
+  ci:
+    runs-on: [ubuntu-latest, windows-latest, macOS-latest]
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          components: rustfmt, clippy
+
+      - uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --all -- --check
+
+      - uses: actions-rs/install@v0.1
+        with:
+          crate: cargo-hack
+          version: latest
+          use-tool-cache: true
+
+      - uses: actions-rs/cargo@v1
+        with:
+          command: hack
+          args: check --workspace --ignore-private --each-feature --no-dev-deps
+
+      - uses: actions-rs/cargo@v1
+        with:
+          command: check
+          args: --workspace --all-targets --all-features
+
+      - uses: actions-rs/cargo@v1
+        with:
+          command: test
+
+      - uses: actions-rs/clippy-check@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          args: --all-features
+
+      - uses: actions-rs/audit-check@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}