s20

Add commands to replace destructible nodes with their indestructible variants and vice versa (if a variant exists)

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This PR aims to add the commands `/destructify` and `/indestructify` which replace indestructible nodes with their destructible variants and vice versa respectively.

Add new map "Cosmic Catastrophe" by s20

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## To-do - [x] Conversion of original PR to four team - Map Related Bugs: - [ ] Fix misaligned blocks from rotation - [ ] Check border mixing from...

 Notes: - @daveistaken has mentioned that they are aware of this but will work on it later. According to their consent, they have said that they would prefer an...