Texture pile grass plants (+ lots of grass)

[careeoki]

As originally described in #1409 , I really want multiple grass heights. We still can't have 2-tall grass, but we can do 2 grass stages with texture piles.
I also generally want a ton more grass, it makes the world much more lush and organic feeling, and reduces the "flatness" a lot of our biomes have.
I did only* one biome per grass type to showcase, so other biomes would have to be changed in followup PRs.

Also did tussock as well

annoyances with so much grass:

• without Require sickles for collecting leaves, grass plants, etc #1558 you get a ton of grass in your inventory all the time
• Foliage should be replaceable #2267 is extra annoying

[H41ogen]

random offset/rotation (maybe even non-90 degree rotations?) would be nice, probably not in this pr but in another.

[careeoki]

random offset/rotation (maybe even non-90 degree rotations?) would be nice, probably not in this pr but in another.

That's outside my abilities, but yes, I want random offsets and texture variants for grass