CI: add ruff check for PERF

Author: julianoes

.github/workflows/main.yml

@@ -28,6 +28,7 @@ jobs:
         run: |
           pipx run ruff format --check --line-length=100 examples
           pipx run ruff check --select=ASYNC,RUF006,E,F --line-length=100 examples
+          pipx run ruff check --select=PERF --line-length=100 .
           pipx run codespell .
 
       - name: Install prerequisites