compliance

This update adds a myriad of tweaks and reformatting, to fix hundreds of cases of standards misalignment;
for example, the entire codebase has been reformatted to align with PEP standards MUCH better - bringing violations down from 837 to 239 - and hundreds of code smells, as detected by sonarcloud, have been cleaned up.

This update also brings a fix to a major bug, in which adding a custom emoji reaction to a reaction menu could crash the menu, if the emoji is not accessible to the bot. This was an exceptionally large issue with inline menus.