fix: Clean up whitespace and formatting in various files

.gitignore

@@ -300,4 +300,3 @@ dist
 .yarn/install-state.gz
 .pnp.*
 .pnpm-store/
-

markdown_view_plugin/.pre-commit-config.yaml

@@ -0,0 +1,15 @@
+repos:
+-   repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.1.11
+    hooks:
+    -   id: ruff
+        args: [--fix]
+    -   id: ruff-format
+
+-   repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.5.0
+    hooks:
+    -   id: trailing-whitespace
+    -   id: end-of-file-fixer
+    -   id: check-yaml
+    -   id: check-added-large-files

markdown_view_plugin/markdown_view_plugin.py

@@ -82,4 +82,3 @@ class MarkdownViewPlugin(AirflowPlugin):
 # For Airflow to pick up the plugin, the class name must match the filename (snake_case to PascalCase)
 # or be explicitly defined in an __init__.py in the plugin\'s root directory.
 # Assuming filename is markdown_view_plugin.py, class MarkdownViewPlugin is correct.
-