adapting the tests and improving tests to reduce usage of MockUtils
adding some util methods to message bean
extending cache for cached messages
enabling to build cached messages from messages in DM channels (they are not part of the message cache)
splitting multiple listeners to different beans, for better overview (emote updated)
adding convenience service for reactions specifically
split cached reaction and cached reactions, singular only contains one user, while the later contains all users
fixing liquibase configuration for assigned role user
fixing assignable role not having a transaction
moved caching update a bit earlier in various methods
fixing bug that a manual unmute caused duplicate unmute notification
fixing short scheduled unmute not checking the new mute state
limiting parameters for roll
adding http and hash service
adding ability to add default emotes to a message to message service
adding message embedded listener to wrap the embedded event
adding custom channel groups which can be defined by modules, in case a change on a channel group (only created and updated) happens a listener is available in order to sync the state in dependant areas
changing command receiver re-throwing abstracto runtime exceptions in order to display them better
changing channel group parameter handler to throw an exception in case the channel group was not found
adding User in a server parameter handler
split channel not found exception to be able to differentiate between not found in database and not found in guild
changing exception handling in command received handler to handle the case for only one parameter handler future which failed (the whole single future failed, which was not reported)
changing parameter type of `removeFromChannelGroup` to AChannel in order to be able to delete channels in the database via ID
moving method to mock utils for mocking consumer
removing parameter validation from commands, as it should be done in the command received handler and parameter handlers anyway
