ci: Add Ruff linter as GitHub Action.

Executes Ruff as linter tool to check code pattern.

Signed-off-by: Paulo Vital <paulo.vital@ibm.com>
Signed-off-by: Cagri Yonca <cagri@ibm.com>

Author: CagriYonca

.github/workflows/linter.yml

@@ -0,0 +1,13 @@
+name: Ruff
+on: [ push, pull_request ]
+jobs:
+  ruff:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: astral-sh/ruff-action@v3
+        with:
+            src: >-
+                ./src
+                ./tests
+                ./tests_aws