added modmail with some simple features (chat between user and moderator), and initial server selection (currently allows all servers, and does not consider the modmail feature)
added the initial commands, not all of them hold logic currently
added some checks to not crash when a command has null configuration
changed systemconfig to also have a long value, because double is not fit for all cases
added locking mechanism, to effectively lock the whole table without using the ... proper locking mechanism (needs to be reviewed)
changed interface in channel service to be a message channel instead of a textChannel
changed starboard post to be a user in a server instead of only user
added gson dependency
added logging the exception in the exception post executor
added configuration exception in case the configuration for posttargets is not correct
added support to send embeds to posttargets
changed interface to be a warnlog instead of a server context for warning users, because the template
changed freemarker Incompatible Improvements to support default methods in interfaces
added ability to define embed configurations to be used, in order for a template to only be configurable as a template
changed template content size to 4000 characters
