Libedit: conform default pin offset to KLC

Move default defines to standard location

Fixes https://gitlab.com/kicad/code/kicad/issues/5373

eeschema/default_values.h

@@ -63,4 +63,7 @@
 ///< The default text size in mils. (can be changed in preference menu)
 #define DEFAULT_TEXT_SIZE 50
 
-#endif
+///< The offset of the pin name string from the end of the pin in mils.
+#define DEFAULT_PIN_NAME_OFFSET 20
+
+#endif

eeschema/lib_pin.h

@@ -34,9 +34,6 @@ class SCH_COMPONENT;
 #include <pin_type.h>
 #include <class_libentry.h>
 
-/// The offset of the pin name string from the end of the pin in mils.
-#define DEFAULT_PIN_NAME_OFFSET 40
-
 // Circle diameter drawn at the active end of pins:
 #define TARGET_PIN_RADIUS   Mils2iu( 15 )