chore: setup CI pipelines in GHA

Author: cngJo

.editorconfig

@@ -0,0 +1,23 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+# Bash scripts (.sh files and all bin/* files)
+[{*.sh,bin/*}]
+indent_style = space
+indent_size = 2
+
+# YAML files
+[*.{yml,yaml}]
+indent_style = space
+indent_size = 2
+
+# Markdown files
+[*.md]
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace = false

.github/workflows/pull_request.yaml

@@ -0,0 +1,25 @@
+name: Link
+
+on:
+  pull_request:
+
+jobs:
+  link:
+    name: Lint codebase
+    runs-on: ubuntu-slim
+
+    steps:
+      - uses: actions/checkout@v6
+
+      - name: Install ShellCheck
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y shellcheck
+      - uses: editorconfig-checker/action-editorconfig-checker@main
+
+      - name: Run ShellCheck on bin/git-merge-to
+        run: |
+          shellcheck bin/git-merge-to
+
+      - name: Run editorconfig-checker
+        run: editorconfig-checker

bin/git-merge-to

@@ -45,4 +45,4 @@ git switch "$current_branch"
 echo "Successfully merged '$current_branch' into '$target_branch'."
 [[ "$push_opt" == "--push" ]] && echo "   Changes have been pushed."
 
-exit 0
+exit 0