feat: emoji reactions

[m-doescode]

Adds a button to the hold-tap message menu which opens up a modal to add reactions.
Also adds an add reaction button next to existing reactions under messages.

There is still some work to be done, namely adding reaction buttons in other places (for instance, while previewing images).
I also don't really like the emoji selector package I've chosen, for one because it feels a bit out of place, but additionally because it doesn't work out-of-the-box and requires patching, which loops in an additional dependency (patch-package) which is not ideal.

Also, the picker does not support custom emojis which will be a problem in the future.

Anyway, this is only a draft and sort of request-for-comments from the maintainers of the project. If you have any suggestions or ideas, please feel free to let me know.

I apologize in advance for any bad code styling/formatting. Let me know and I'll clean it up

Future tasklist:

• Recent emojis instead of "Add reaction" button in message menu sheet
• Custom emoji support

Please make sure to check the following tasks before opening and submitting a PR

• I understand and have followed the Contributing to Revolt stoatchat/discussions#282
• I have tested my changes locally and they are working as intended
• These changes do not have any notable side effects on other Revolt projects

[Rexogamer]

thanks for the PR! probably about time I stop putting these features off...

some initial thoughts:

• would you mind splitting the reaction viewer into its own PR? it'll probably be easier to get done/merged than the emoji picker

• I'm not too sure about how emoji picking is going to be handled - I might add a general emoji picker first before coming back to this?

• I will note more generally that, while this specific package might not be the right one, for packages that need patching you can/should use yarn patch instead - see .yarn/patches

[m-doescode]

Thanks for getting back!

• would you mind splitting the reaction viewer into its own PR? it'll probably be easier to get done/merged than the emoji picker

Sure thing. Just undid the commits on this PR, will be opening a new one soon.

• I'm not too sure about how emoji picking is going to be handled - I might add a general emoji picker first before coming back to this?

Probably a good idea. I'm not too pleased with the library I've imported anyway, and it doesn't let you add custom emojis.

• I will note more generally that, while this specific package might not be the right one, for packages that need patching you can/should use yarn patch instead - see .yarn/patches

Noted. Thanks!