[SUGGESTION] Add checkboxes for "mossy" and "cracked" that will make a mossy/cracked clone of all other selected checkboxes

## Description
Title is pretty self explanatory, being able to more quickly generate mossy and cracked versions of blocks would be nice.
## Method of achieving this
"mossy_" and "cracked_" could be appended to a clone of everything chosen to be generated by use of a checkbox before generating.