TRACKING: Handle message links

[preetmishra]

• Handle internal (stream/topic/near narrow) links - Handle internal links #708
  • Follow-up: Handle internal PM links Handle internal PM links #883
• Handle internal media links - 359 -> 740 -> Add media support in ZT #1058
• Handle external links

[zulipbot]

Hello @preetmishra, you have been unassigned from this issue because you have not updated this issue or any referenced pull requests for over 14 days.

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[Ezio-Sarthak]

I would like to add internal PM links handling, as a follow-up PR from #708. Discussed my concerns in czo :)