ROM and Compression library updates

Remove Compress and Decompress from ROM
Move Editor parent class to its own file
Move 65816 editor constants to widgets
Update compression_test and snes_palette_test
Start version constant classes (experimental)
Move SetupROM for editors to load renderer

src/app/core/editor.h

@@ -0,0 +1,21 @@
+#ifndef YAZE_APP_CORE_EDITOR_H
+#define YAZE_APP_CORE_EDITOR_H
+
+#include "absl/status/status.h"
+
+class Editor {
+ public:
+  Editor() = default;
+  virtual ~Editor() = default;
+
+  virtual absl::Status Cut() = 0;
+  virtual absl::Status Copy() = 0;
+  virtual absl::Status Paste() = 0;
+
+  virtual absl::Status Undo() = 0;
+  virtual absl::Status Redo() = 0;
+
+  virtual absl::Status Update() = 0;
+};
+
+#endif  // YAZE_APP_CORE_EDITOR_H