Separate out the major UIs to get ready for their development, and enable debug button.

meson.build

@@ -47,6 +47,7 @@ sources = [
   'ansi_parser.cpp',
   'camera.cpp',
   'combat.cpp',
+  'combat_ui.cpp',
   'components.cpp',
   'config.cpp',
   'dbc.cpp',
@@ -68,6 +69,7 @@ sources = [
   'shiterator.hpp',
   'spatialmap.cpp',
   'stats.cpp',
+  'status_ui.cpp',
   'systems.cpp',
   'texture.cpp',
   'tilemap.cpp',