ci: add automated tests/linting/format

.github/workflows/ci.yml

@@ -0,0 +1,24 @@
+name: "ci"
+
+on:
+    push:
+        branches: ["main"]
+    pull_request:
+        branches: ["main"]
+
+env:
+    CARGO_TERM_COLOR: "always"
+
+jobs:
+    ci:
+        runs-on: "ubuntu-latest"
+
+        steps:
+            - uses: "actions/checkout@v4"
+
+            - run: "rustc --version"
+
+            - run: "cargo build --verbose"
+            - run: "cargo test --verbose"
+            - run: "cargo clippy --verbose -- -D warnings"
+            - run: "cargo fmt -- --check"