Remove Overlayhader and support loading overlays

include/PSX/Overlay/overlay.hpp

@@ -3,11 +3,9 @@
 #include "../AutoLBA/auto_lba.hpp"
 
 namespace JabyEngine {
-    struct __attribute__((packed)) OverlayHeader {
-        void   (*execute)();
-        uint16_t lba_size; //< The size of the OverlayLBA section
-    };
-
     typedef AutoLBAEntry OverlayLBA;
+
+    // Can be used to create dummy values to trick LZ4 into compressing an uncompressed overlay
+    #define __create_dummy_fill(length) static const uint8_t __section(".keep.dummy") __used DummyFilling[length] = {0x0}
 }
 #endif //!__JABYENGINE_OVERLAY__HPP__