Convert Encoder callbacks to be boolean functions (#12805)

Co-authored-by: James Young <18669334+noroadsleft@users.noreply.github.com>

keyboards/hadron/hadron.h

@@ -1,16 +1,17 @@
 #ifndef HADRON_H
 #define HADRON_H
 
-#ifdef SUBPROJECT_ver0
+#include "quantum.h"
+
+#ifdef KEYBOARD_hadron_ver0
     #include "ver0.h"
 #endif
-#ifdef SUBPROJECT_ver2
+#ifdef KEYBOARD_hadron_ver2
     #include "ver2.h"
 #endif
-#ifdef SUBPROJECT_ver3
+#ifdef KEYBOARD_hadron_ver3
     #include "ver3.h"
 #endif
-#include "quantum.h"
 
 
 #define LAYOUT( \