Move to Rust

[kadiwa4]

JavaScript is getting annoying. It has the benefit that you can dynamically import JS files, which is great for letting guild owners customise everything, but in the long run I think that design will not work anyway. Currently, the growth of this project is restricted by the JS code being buggy and the dynamic guild configs not being a good idea in a large scale (actually the biggest restriction is me being lazy). In the Rust version, all the guild data will have to move to SQLite. Development is (sporadically) being done in the rust branch.