add lint gh action

.github/workflows/lint.yaml

@@ -0,0 +1,31 @@
+# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
+on:
+  push:
+    branches: [main, url-token-changes]
+  pull_request:
+    branches: [main, url-token-changes]
+
+name: lint
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    env:
+      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: r-lib/actions/setup-r@v2
+        with:
+          use-public-rspm: true
+
+      - uses: r-lib/actions/setup-r-dependencies@v2
+        with:
+          extra-packages: any::lintr, local::.
+          needs: lint
+
+      - name: Lint
+        run: lintr::lint_package()
+        shell: Rscript {0}
+        env:
+          LINTR_ERROR_ON_LINT: true