Moss in Mangrove Swamp, and some other 1.19 related stuff.

Instead of patches of grass in the mangrove swamp (or maybe on the grass) we could have more carpets on the floor and on roots.

It would also be cool to see villages appearing in the mangrove swamp and in the jungle.

Climbable mangrove roots maybe?

Also please could we get like 4 - 6 block deep mud blocks in the mangrove swamp since it can look weird underwater or on a cliff face.

Some moss on fallen down logs would also be cool along with new flowers in the mangrove swamp, in the birch forest and in the lush caves would be nice.

Having something to make the regular forest and the birch forest be distinguishable would be great too.

- TheDerpu0ne