finish codeparser improvements

pip_cmg now works with new nested entities approach
Getters now can access to bitfields

utils/code_model_generator/getter.h

@@ -22,6 +22,8 @@
 
 #include "common.h"
 
+void writeGetterTypeMembers(Runtime & rt, const PICodeParser::Entity * e, PIString var_prefix = {});
+void writeGetterValueMembers(Runtime & rt, const PICodeParser::Entity * e, PIString var_prefix = {});
 void makeGetterType(Runtime & rt, const PICodeParser::Entity * e);
 void makeGetterValue(Runtime & rt, const PICodeParser::Entity * e);