New neater tree graphics

game/engines/default/engine/Entity.lua

game/modules/tome/class/Grid.lua

game/modules/tome/class/NicerTiles.lua

game/modules/tome/data/general/grids/autumn_forest.lua

game/modules/tome/data/general/grids/burntland.lua

game/modules/tome/data/general/grids/forest.lua

game/modules/tome/data/general/grids/mountain.lua

game/modules/tome/data/general/grids/sand.lua

game/modules/tome/data/gfx/shaders/tree.frag

game/modules/tome/data/gfx/shaders/tree.lua

...me/data/gfx/shockbolt/terrain/grass/autumn_grass_1_01.png

...me/data/gfx/shockbolt/terrain/grass/autumn_grass_2_01.png

...me/data/gfx/shockbolt/terrain/grass/autumn_grass_2_02.png

...me/data/gfx/shockbolt/terrain/grass/autumn_grass_3_01.png

...me/data/gfx/shockbolt/terrain/grass/autumn_grass_4_01.png

...me/data/gfx/shockbolt/terrain/grass/autumn_grass_4_02.png

...me/data/gfx/shockbolt/terrain/grass/autumn_grass_6_01.png

...me/data/gfx/shockbolt/terrain/grass/autumn_grass_6_02.png

...me/data/gfx/shockbolt/terrain/grass/autumn_grass_7_01.png

...me/data/gfx/shockbolt/terrain/grass/autumn_grass_8_01.png