[Feature] Improvement of folder structure

[bivashy]

Is your feature request related to a problem? Please describe.
Currently all files messed up in the mcauth folder, and it is not organized at all.

Describe the solution you'd like
Folder structure that i would've like to see:

├── mcauth
│   ├── addons
│   │   ├── Addon.java
│   ├── internal
│   │   ├── sql
│   │   │   ├── database-driver.jar
│   │   │   ├── database.db
│   │   ├── libraries
│   ├── lang
│   │   ├── messages-en.yml
│   ├── config.yml
│   ├── vk-config.yml
│   ├── telegram-config.yml
│   ├── discord-config.yml

Describe alternatives you've considered
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Additional context
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