added pre-commit config

.pre-commit-config.yaml

@@ -0,0 +1,21 @@
+---
+repos:
+- repo: https://github.com/pre-commit/pre-commit-hooks
+  rev: v5.0.0
+  hooks:
+  - id: check-ast
+  - id: check-yaml
+  - id: end-of-file-fixer
+  - id: trailing-whitespace
+  - id: check-merge-conflict
+  - id: check-byte-order-marker
+- repo: https://github.com/igorshubovych/markdownlint-cli
+  rev: v0.42.0
+  hooks:
+  - id: markdownlint
+    args: ["--disable", "MD013", "--"]
+- repo: https://github.com/koalaman/shellcheck-precommit
+  rev: v0.10.0
+  hooks:
+  - id: shellcheck
+...