Debugger: Split into core library and application.

- Add subfolder src/kits/debugger which contains the debugger's core
  functionality and lower layers. Correspondingly add headers/private/debugger
  for shared headers to be used by clients such as the Debugger application
  and eventual remote_debug_server. Adjust various files to account for
  differences as a result of the split and moves.
- Add libdebugger.so to minimal Jamfile.

build/jam/images/definitions/minimum

@@ -95,6 +95,7 @@ rule HaikuImageGetSystemLibs
 			libpackage.so
 			libtextencoding.so libtracker.so libtranslation.so
 		] ]
+		libdebugger.so@primary
 		;
 }
 

build/jam/images/definitions/regular

@@ -79,6 +79,7 @@ rule HaikuImageGetSystemLibs
 			libscreensaver.so
 			libtextencoding.so libtracker.so libtranslation.so
 		] ]
+		libdebugger.so@primary
 		;
 }