Server log system

[rasmusgerdin]

Much like the mod case system implementation from #231, we should implement a solution for generating server logs that doesn't rely on us creating a MessageEmbed for each feature that creates a server log message.

Should rely on types for;

• adding things (embed color green, examples below)
  • Member joining
  • Role added
  • Custom command created
• modifying things (embed color blue, examples below)
  • Message edits and deletions
  • Channel name changed
  • User's roles modified
• removing things (embed color red, examples below)
  • Member leaving
  • Channel removed
  • Custom command deleted

Color system is based on the current implementation and if we can think up a better one that takes things such as moderation actions into account as well with distinct colors for different things, that would be great.

Possibly other types to be implemented as well? Unsure, let's discuss.

[rasmusgerdin]

Implemented in a different way in 2ca9ece.