More editing tools & custom material hardness

New small demo showcasing some new editing tools (set height and noise) that could be used in the editor to paint the terrain map. Also showcases different "durability" for each material (stone material showcased).

[@jessiebarakat5153]

blud is just TOO cool!!!

[@jed0378]

Thank you jessiebarak5153

[@pigsteel3342]

I hate this revert it

[@jed0378]

aw okay :(