Create kotlin-lint.yml

.github/linters/ktlint_config

@@ -0,0 +1,3 @@
+[*.{kt,kts}]
+ktlint_code_style = ktlint_official
+ktlint_standard_no-consecutive-comments = disabled

.github/workflows/kotlin-lint.yml

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+name: Kotlin Linter
+
+on:
+  workflow_dispatch:
+  pull_request:
+    paths:
+      - .github/workflows/kotlin-lint.yml
+      - 'kotlin/**/*.{kt,kts}'
+
+jobs:
+  ktlint:
+    name: Lint Kotlin
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout files
+        uses: actions/checkout@v4
+        with:
+            fetch-depth: 0
+      - name: Get changed files
+        id: changed-files
+        uses: tj-actions/changed-files@v41
+        with:
+          files: "kotlin/**/*.{kt,kts}"
+      - name: List all changed files
+        env:
+          ALL_CHANGED_FILES: ${{ steps.changed-files.outputs.all_changed_files }}
+        run: |
+          for file in ${ALL_CHANGED_FILES}; do
+            echo "$file was changed"
+          done
+      - name: Install ktlint via curl
+        if: steps.changed-files.outputs.any_changed == 'true'
+        run: |
+          curl -sSLO https://github.com/pinterest/ktlint/releases/download/1.3.0/ktlint && chmod a+x ktlint && sudo mv ktlint /usr/local/bin/
+      - name: Run ktlint
+        if: steps.changed-files.outputs.any_changed == 'true'
+        run: |
+          ktlint --reporter=plain?group_by_file --editorconfig=".github/linters/ktlint_config"
+        continue-on-error: false
+