Vanilla Challenges

• Bug Fix Task when finish all scheduled challenges;
• Others minors fixs;
• Code optimization;
• Added others MockBukkit tests;

Next Update in TODO List:

• New Challenges;
• Add command for transform points in items;

If you find some bugs please don't hesitate to report them via modrinth or discord, I will reply you as soon as possible and if you have any ideas I will be happy to listen to you.