Add reusable lint workflow for tskit-dev repos

Author: benjeffery

.github/workflows/lint.yml

@@ -0,0 +1,32 @@
+name: Reusable Lint Workflow
+
+on:
+  workflow_call:
+
+jobs:
+  pre-commit:
+    name: Lint
+    runs-on: ubuntu-24.04
+    steps:
+      - name: Cancel Previous Runs
+        uses: styfle/[email protected]
+        with:
+          access_token: ${{ github.token }}
+      
+      - uses: actions/[email protected]
+      
+      - uses: actions/[email protected]
+        with:
+          python-version: '3.12'
+      
+      - name: Install clang-format (if needed)
+        run: |
+          if grep -q "clang" .pre-commit-config.yaml 2>/dev/null; then
+            echo "Installing clang-format..."
+            pip install --upgrade setuptools
+            pip install clang-format==6.0.1
+          else
+            echo "No clang-format needed"
+          fi
+      
+      - uses: pre-commit/[email protected]