Easier World Creator

Warning! Mods that used old version of this mod might not work.

Cleanup code update and update to 1.21.3

This version bring a lot of qol changes.

• reduced the nulber of warnings ~200 warnings -> ~15 warnings.
• more consise way of naming objects
• spelling mistakes fixed
• javadoc cleanup and addition
• performance improvements when using only one BlockLayer(2x to 3x faster)
• force and blocksToForce parameters moved to BlockLayer class
• Shape class was divided into multiple classes for better maintainibility and readibility
• some methods addition(some getter and setters for example)
• removed deprecated methods