Update rust.yml

Author: GodGotzi

.github/workflows/rust.yml

@@ -11,11 +11,13 @@ env:
 
 jobs:
   build:
-
     runs-on: ubuntu-latest
-
     steps:
     - uses: actions/checkout@v4
+    - name: install rustfmt
+      run: cargo install rustfmt
+    - name: fmt check
+      run: cargo fmt --check
     - name: Build example simple
       run: cargo build --example simple
     - name: Build example file