Add LC_LZ2 Compression library

Refactor ROM class
Editor housekeeping

src/app/editor/sprite_editor.cc

@@ -0,0 +1,11 @@
+#include "sprite_editor.h"
+
+namespace yaze {
+namespace app {
+namespace editor {
+
+absl::Status SpriteEditor::Update() { return absl::OkStatus(); }
+
+}  // namespace editor
+}  // namespace app
+}  // namespace yaze