Quest Markers, Jacquard Quips, Block Textures

[list] [*] Added Map yellow quest markers, showing the farthest unexplored room in each branch [*] Adjusted map player/spawn/end markers [*] Added physical spawn purple cube object to match map spawn marker [*] Added floor textures distinct from walls, improving player orientation clarity [*] Items/Upgrades/Money state is preserved upon entering a level, and restored upon resetting/respawning in a level [*] Added Jacquard quips when entering a level with a shop, entering the shop room, and breaking the shop crate [/list]