Implement Personal Emotes

[Nerixyz]

Pull request checklist:

• CHANGELOG.md was updated, if applicable

Description

This PR implements personal emotes.

Known bugs/tasks:

• The personal emote set is only fetched after typing a message. So you can't autocomplete emotes immediately.
• Personal emotes only show up in the second message (same issue as for badges).
• Personal emotes are not yet deleted after they haven't been used in a while (the images for the emotes however are deleted as always).
• Personal emotes should show in the Subs tab instead of Channel.
• Only approved personal emotes should be shown.
• Add a setting to disable personal emotes

[github-actions]

clang-tidy made some suggestions

[github-actions]

clang-tidy made some suggestions

[AnatoleAM]

Personal emotes are not yet deleted after they haven't been used in a while

This probably should be tied to the socket's lifecycle; i.e clear the data after a successful non-resumed connection. Otherwise, the EventAPI wouldn't send the data again.

[Nerixyz]

This probably should be tied to the socket's lifecycle; i.e clear the data after a successful non-resumed connection. Otherwise, the EventAPI wouldn't send the data again.

I don't think there's much need for this then, compared to the required bookkeeping. The images for the emotes are automatically deleted after a while. And I don't think the emote-sets take that much space (about 1KiB/Set - a 32x32 emote with 25 frames takes about 100KiB). Furthermore, there aren't many reconnects, so this data would even with the bookkeeping stay in memory.

[AnatoleAM]

LGTM, i may have some nitpicks later but we can let this cook in nightly for a while and if needed have a subsequent PR