Closes #316, closes #426 and updates #666

When we choose a field with rich text option enabled as the status field, the column header in Board view will now be formatted correctly.

Notes:

• The rendering feature is powered by Obsidian's Markdown renderer, and some DOM strings can also be rendered. See Support Dom Render for HTML String #64
• Now we can enable the rich-text formatting only from column configuring provided by Table view. Will do some improvements.