Native v8.1.3

This release improves DM invite link generation speed, adds contact book integration during onboarding for easier invitations, and introduces a connectivity indicator to show when other users are online. We've also fixed issues with link attachments and now display external links for embedded media.

• Improves the speed of personal DM invite link generation on Tlon-hosted ships
• Adds a step in onboarding where users who authorize access to their device's contact book can send invitations to Tlon Messenger directly thereafter
• Adds a "Contact Support" button to the error screen where Tlon Hosting reports the ship is not running
• Adds a simple "stop-light" style connectivity indicator to the channel header to see if the other node is online
• Fixes an issue where modifying a link URL after attaching it to a message (e.g. removing UTM strings after pasting) would cause the sent message to display with two link attachments
• Fixes an issue where YouTube, Twitter, and other live embedded media would fail to display correctly; we now display an external link