Implement message components for user and message commands

[mozoarella]

Apparently Discord only allows an app to supply 5 message commands and 5 user commands.

Some experimentation shows us that we can respond to an interaction with an ephemeral message with message components aimed at providing more options.

Part of this issue is figuring out a consistent structure for message/user commands and implementing message components on the commands.

These component interactions have to be handled as well and since the Discord API supplies no info about the original interaction or message we'll have to store some data for each interaction as well.

• Redo text manipulation command (as an empty shell)
• Find and implement a suitable temporary data store (Probably Redis)
• Handle responsibly storing and retrieving data necessary for each interaction in said data store

The scope of this issue is just the text manipulation commands, translations will be done at a later stage.