feat: Add blog post functionality with Markdown support

- Introduced BlogPostNode to render blog posts with metadata and content.
- Updated graph.json to include new blog post nodes.
- Enhanced MarkdownRenderer to support code block options for max height.
- Added CSS styles for improved code block scrolling and syntax highlighting.
- Created example blog posts: "Markdown Formatting Test", "Welcome to My Blog", and "Building Interactive Node Graphs".
- Implemented dynamic loading of blog data from blogs.json.
- Updated WorkspaceNavigator to allow smooth panning over blog nodes.

website/scripts/nodes/index.js

@@ -16,6 +16,7 @@ export { CustomEventNode }   from './CustomEventNode.js';
 export { ButtonNode }        from './ButtonNode.js';
 export { TimerNode }         from './TimerNode.js';
 export { InfoNode }          from './InfoNode.js';
+export { BlogPostNode }      from './BlogPostNode.js';
 export { PureNode }          from './PureNode.js';
 export { MatrixChatNode }    from './MatrixChatNode.js';
 export { GetMatrixChatNode } from './GetMatrixChatNode.js';