🐛 Finish and organize temp sensors (#23519)

Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>

Marlin/src/core/macros.h

@@ -235,6 +235,8 @@
 #define __TERN(T,V...)      ___TERN(_CAT(_NO,T),V)  // Prepend '_NO' to get '_NOT_0' or '_NOT_1'
 #define ___TERN(P,V...)     THIRD(P,V)              // If first argument has a comma, A. Else B.
 
+#define _OPTITEM(A...)      A,
+#define OPTITEM(O,A...)     TERN_(O,DEFER4(_OPTITEM)(A))
 #define _OPTARG(A...)       , A
 #define OPTARG(O,A...)      TERN_(O,DEFER4(_OPTARG)(A))
 #define _OPTCODE(A)         A;