Double tap message to show context menu

[kevinmbeaulieu]

First time contributor checklist

• [x] I have read the README and CONTRIBUTING documents
• [x] I have signed the Contributor Licence Agreement

Contributor checklist

• [x] My commits are rebased on the latest main branch
• [x] My commits are in nice logical chunks
• [x] My contribution is fully baked and is ready to be merged as is
• [x] I have tested my contribution on these devices:

• iPhone 14 Pro, iOS 17.4

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Description

In the conversation view, long pressing a message presents the context view for that cell, allowing the user to add reactions, reply, delete the message, etc. To match the behavior that iOS users are accustomed to in iMessage, Signal should also allow double-tapping messages to present this menu. This can also be faster, since double-tapping doesn't have the same time delay that long press gestures have.

The code changes implemented all followed the same patterns as the tap and long press gesture recognizers on that view, so even though it's a few hundred lines it's mostly copy-paste from that and just tweaking the relevant parts.

[tohrxyz]

can't comment on the code, but this would be a good feature to have for sure

great work