feat: notify mods when users are warned

[iProdigy]

Currently the pubsub topic only contains the moderator user id but not name, so we say A moderator did the action (which is still clickable to open their usercard based on id)

Related to #5439

[pajlada]

Thank you!
I made two commits

1. Added some TODO's regarding resolving the moderators user ID to a user in the future
2. I get the list of reasons instead of only the custom reason
   When a warning comes in over pubsub, the args list is a list where the first param is the user that was warned, second param is the free-text reason, and any param after that is one of the rules that the user broke
   User broke only one rule:
   QJsonObject({"args":["bbaper","","Pepega"],"created_at":"2024-06-06T09:37:10.457114704Z","created_by":"","created_by_user_id":"11148817","id":"WARNING__11148817__165495734__1717666630457","moderation_action":"warn","target_user_id":"165495734","target_user_login":"bbaper","type":"chat_login_moderation"})
   User broke 2 rules + a custom reason:
   QJsonObject({"args":["bbaper","custom reason xd","Pepega","Rule 2"],"created_at":"2024-06-06T09:37:05.977014158Z","created_by":"","created_by_user_id":"11148817","id":"WARNING__11148817__165495734__1717666625977","moderation_action":"warn","target_user_id":"165495734","target_user_login":"bbaper","type":"chat_login_moderation"})
   User warned only for custom reason: QJsonObject({"args":["bbaper","custom reason only"],"created_at":"2024-06-06T09:39:58.680292231Z","created_by":"","created_by_user_id":"11148817","id":"WARNING__11148817__165495734__1717666798680","moderation_action":"warn","target_user_id":"165495734","target_user_login":"bbaper","type":"chat_login_moderation"})

[iProdigy]

regarding the TODO, can subscribe to twitchdev/issues#963 to track if it's fixed on twitch's end