try to set up the ci workflow as described in the book

.forgejo/workflows/ci.yaml

@@ -0,0 +1,17 @@
+on: [push]
+jobs:
+  ci:
+    runs-on: [native]
+    steps:
+      - name: checkout code
+        uses: actions/checkout@v4
+      - name: tests
+        run : cargo test
+      - name: linting
+        run : cargo clippy -- -D warnings
+      - name: format
+        run : cargo fmt
+      - name: install cargo audit
+        run : cargo install cargo-audit
+      - name: audit
+        run : cargo audit