GHA: add ruff [ci skip]

Using curl's ruff configuration. curl-for-win has just a tiny amount
of Python, but let's verify it anyway.

Credits-to: Dan Fandrich

curl/curl@57cc523

Author: vszakats

.github/workflows/build.yml

@@ -82,6 +82,14 @@ jobs:
             --ignore-words '.github/workflows/codespell-ignore.words' \
             $(git ls-files)
 
+      - name: 'ruff'
+        run: |
+          source ~/venv/bin/activate
+          ruff --version
+          # shellcheck disable=SC2046
+          ruff check --extend-select=B007,B016,C405,C416,COM818,D200,D213,D204,D401,D415,FURB129,N818,PERF401,PERF403,PIE790,PIE808,PLW0127,Q004,RUF010,SIM101,SIM117,SIM118,TRY400,TRY401 \
+            $(git ls-files '*.py')
+
   linux-glibc-debian-testing-llvm:
     name: 'linux-glibc-debian-testing-llvm'
     runs-on: 'ubuntu-latest'

.github/workflows/requirements.txt

@@ -3,3 +3,4 @@
 
 codespell==2.4.1
 reuse==6.1.2
+ruff==0.14.1