fixed templates for ban and kick logging
refactored kicking service
fixed guild not found exception template
added command validator to be used for unit testing commands
added default values for command configuration
changed some interfaces to message channel instead of text channel
added separate executor service for un-mutes, which is shared
updated spring boot version to 2.3.1
removed database connection string from properties
added logback configuration
changed some future logic in purge
refactored error message for un mute, when there is no active mute
refactored listener interface and removed usage of context utils
added tests for moderation services
restructured channel service calls a little bit
moved dm sending to message service
fixed log level configuration
added full user dto, to be used as a combination of a AUserInServer and Member, for operations which need both, to avoid converting and reloading the user
added mute command and mute role command
added mute table
added mute role table
added job to automatically unmute people at the given time period
restructured warn service
removed simple message log for warnings
added method to templating to support formatting instants
changed command context to be a member instead of user, commands are only supported within guilds
added custom exception templating for the error message
added error message in case the parameters for a command were too little
added support for templates on command help descriptions
added post execution to be executed to print exception messages
refactored command handling to be able to support exceptions
added user and userInServer management
