Extract SmoCallbacks and SmoThreadingModelDesc into smoHooks.h.

Move shared hook and threading-model types out of senseApiDesc.h so both
stimbuff and comparator libraries can include them without pulling in API descs.

Co-authored-by: Cursor <cursoragent@cursor.com>

smocore/comparatorLibs/comparatorApiManager.cpp

@@ -4,7 +4,7 @@
 #include <comparatorLibs/comparatorApiManager.h>
 #include <loadableLib/loadableLibraryManager.h>
 #include <user/comparatorApiDesc.h>
-#include <user/senseApiDesc.h>
+#include <user/smoHooks.h>
 
 namespace smo {
 namespace comparator_lib {