Intermediate refactor to move everything over to using the textures module rather than everyone using one TexturePack thing.

meson.build

@@ -85,6 +85,7 @@ sources = [
   'status_ui.cpp',
   'systems.cpp',
   'texture.cpp',
+  'textures2.cpp',
   'tilemap.cpp',
   'worldbuilder.cpp',
 ]
@@ -105,6 +106,7 @@ executable('runtests', sources + [
   'tests/pathing.cpp',
   'tests/spatialmap.cpp',
   'tests/tilemap.cpp',
+  'tests/textures.cpp',
   ], override_options: exe_defaults,
   dependencies: dependencies + [catch2])