Dependency loader in runtime (like in EternalCore)

[Jakubk15]

In-runtime dependency loader is one of the most cutting-edge features I plan to add to this plugin. There is so many points to cover here, so I leave a link to EternalCore issue and PR.
EternalCodeTeam/EternalCore#396
EternalCodeTeam/EternalCore#301

[Jakubk15]

Not needed anymore due to Paper dependency loader