Fedibird emoji_reaction support

[potproject]

This PR supports the emoji_reactions used in fedibird(https://github.com/fedibird/mastodon)

Issue

#1736

Fedibird Source

https://github.com/fedibird/mastodon/blob/main/app/serializers/rest/emoji_reaction_serializer.rb

Tips

[Breaking Change] Entity.Reaction.accounts is being changed to Entity.Reaction.account_ids. This is a destructive change, but since there was no place where Entity.Reaction.accounts was used, we believe the impact will be minimal.

[h3poteto]

but since there was no place where Entity.Reaction.accounts was used, we believe the impact will be minimal.

Even if you don't use this, it doesn't mean that all users don't use it. So it is still breaking change.
That means I can't merge this casually.

[h3poteto]

And I wonder if we should support instance-specific features.

[potproject]

Even if you don't use this, it doesn't mean that all users don't use it. So it is still breaking change.
That means I can't merge this casually.

Sorry, I thought this value was completely unused, but it was used by Pleroma. I am sure you are right that it cannot be merged casually. This code has been removed.

And I wonder if we should support instance-specific features.

ok.I agree. If you don't want to merge this Issue and PR, you can close it.

[h3poteto]

@potproject Can you please rebase this PR?