chore(ci): add linters GitHub Actions workflow with pre-commit and Semgrep

.github/workflows/linters.yml

@@ -0,0 +1,34 @@
+name: Linters
+
+on:
+  pull_request: {}
+
+jobs:
+  linters:
+    name: linters
+    runs-on: ubuntu-latest
+    if: github.event_name == 'pull_request'
+
+    steps:
+      - uses: actions/checkout@v6
+
+      - name: Set up Python 3.14
+        uses: actions/setup-python@v6
+        with:
+          python-version: '3.14'
+
+      - name: Install and Run Pre-commit
+        uses: pre-commit/action@v3.0.1
+
+      - name: Download Semgrep rules
+        run:
+          git clone --depth 1 https://github.com/frappe/semgrep-rules.git
+          frappe-semgrep-rules
+
+      - name: Download semgrep
+        run: pip install semgrep
+
+      - name: Run Semgrep rules
+        run:
+          semgrep ci --config ./frappe-semgrep-rules/rules --config
+          r/python.lang.correctness