LibDebug: Break inclusion cycle through many forward-declarations

Author: https://github.com/BenWiederhake
Commit: 75673319ad
Pull-request: https://github.com/SerenityOS/serenity/pull/15235
Reviewed-by: https://github.com/bgianfo ✅
Reviewed-by: https://github.com/trflynn89

Userland/Libraries/LibDebug/Dwarf/LineProgram.h

@@ -6,13 +6,15 @@
 
 #pragma once
 
-#include "DwarfInfo.h"
 #include <AK/FlyString.h>
 #include <AK/MemoryStream.h>
 #include <AK/Vector.h>
+#include <LibDebug/Dwarf/DwarfTypes.h>
 
 namespace Debug::Dwarf {
 
+class DwarfInfo;
+
 struct [[gnu::packed]] LineProgramUnitHeader32Common {
     u32 length;
     u16 version;