Introduce pre-commit-hooks hook (#202)

Apply changes

.pre-commit-config.yaml

 exclude: ^docs/
 repos:
+- repo: https://github.com/pre-commit/pre-commit-hooks
+  rev: v4.4.0
+  hooks:
+    - id: check-ast
+    - id: check-merge-conflict
+    - id: check-toml
+    - id: debug-statements
+    - id: end-of-file-fixer
+    - id: mixed-line-ending
+    - id: trailing-whitespace
 -   repo: https://github.com/psf/black
     rev: 23.3.0
     hooks: