Refactor codebase - Githubissues

Refactor the entire codebase to a better design.

Separated projects:

SteelBot.Core
SteelBot.Core.Abstractions
SteelBot.Modules.* (pets, stats, etc.)
- Include channels in these projects
SteelBot.Modules.*.Abstractions
SteelBot.Database.PostgreSql
SteelBot.Database.Abstractions
- Repositories provided by these database projects
SteelBot.Algorithms
SteelBot.Maths
SteelBot.Extensions

Unit test projects for everything

JackSteel97 / SteelBot