* Bump version
* Update dependencies
* Copy .editorconfig from BirthdayBot
* Still want to properly look over it some time
* Set up dotnet-ef as project tool
Functionality between existing text and new slash commands have been reimplemented, with common functionality between both methods moved to a common base class.
This may see another rewrite later to make use of the library's interactions framework.
This new code's structure and function is partially adapted from Birthday Bot and partially ported from the previous Python-based version of World Time.
This commit introduces very minor end-user changes and no new features.
