feature: support for all discussion types (open, closed, duplicate, outdated)

[setchy]

📝 Provide a description of the new feature

Add support for the 4 types of Discussions

• Open - CommentDiscussionIcon - color:gray
• Closed - DiscussionClosedIcon - color: purple
• Duplicate - DiscussionDuplicateIcon - color:gray
• Outdated - DiscussionOutdatedIcon - color:gray

➕ Additional Information

No response