Update custom-emoji

[Fiffers]

This PR implements a new feature that allows a user to provide a github repository "address" in their config and allow the plugin to automatically download a repository of emoji to their ~/.runelite/emojis folder.

• The user input for the github repository address must be in the format of owner/repository or owner/repository/tree/branch. For example, if the user wanted to use the full URL of https://github.com/GigaClanOfHeck/emojis, they would need to input GigaClanOfHeck/emojis into their config. This ensures that there isn't any funny business where a user tries to use a repository that isn't github or something.
• The plugin only downloads image files from the repository .png, .jpg, .jpeg, .gif.
• Uses hashes from the github api to track updates/changes in a manifest json file, so no need for git.

There's also a couple of bug fixes in this PR:

• Fixed a bug causing tooltip text to remain visible when the chat widget isn't visible, like when talking to an NPC.
• Fixed a bug causing the suggestions overlay to remain visible when the user clears the chat input using the escape button on their keyboard

[runelite-github-app]

custom-emoji: da7352a542b765337c2162d149ed8dd177b74e1d..4afc27f8b8c9771a930e72a0e3a36fb8d0bbdc87

[runelite-github-app]

This plugin requires a review from a Plugin Hub maintainer. The reviewer will request any additional changes if needed.

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Internal use only: Reviewer details Maintainer details