grasslands map + asset reorganization

[M4DM4N56]

• added the grasslands map tileset

• nearly halved the grasslands tileset

  • with such a drastic change to the tileset, i had to recreate the grasslands area by hand, aside from the random floor it is 100% accurate to the old one so there shouldn't be any issues there
  • removed "1-wide" and "1-thin" walls
  • these tiles were never in use. this cut will be a little limiting in terms of map creation, but tbh the "1-wide/thin" walls were never truly complete and fully completing the tile set would make it about 4x bigger than the dungeon one, which is too much work atm

[POSSIBLY REALLY BAD PLEASE REVIEW THIS]

• renamed several files
  • i renamed all the tsx/tmx/png asset files to all follow the same naming convention
  • i tested it and the dungeon still works, i just hope nothing else broke from this
  • i dont really know how or where all the map loading stuff is so im hoping one of you guys can check this out and make sure i didnt do anything too bad.
  • moved the unused dungeon tsx/tmx files into an 'outdated' folder for cleanlines

[swatkinson]

Looks good!

[swatkinson]

Looks super good :)