Reworked GenerateEnumItemFromMacro so enum items have namespaces.
Reworked GenerateEnumItemFromMacro so enum items have namespaces.

zillemarco/CppSharp,ddobrev/CppSharp,mohtamohit/CppSharp,u255436/CppSharp,inordertotest/CppSharp,ktopouzi/CppSharp,zillemarco/CppSharp,mono/CppSharp,ddobrev/CppSharp,inordertotest/CppSharp,mono/CppSharp,mohtamohit/CppSharp,u255436/CppSharp,zillemarco/CppSharp,ktopouzi/CppSharp,u255436/CppSharp,ddobrev/CppSharp,ktopouzi/CppSharp,inordertotest/CppSharp,mono/CppSharp,mono/CppSharp,inordertotest/CppSharp,u255436/CppSharp,mono/CppSharp,ddobrev/CppSharp,zillemarco/CppSharp,mono/CppSharp,ktopouzi/CppSharp,mohtamohit/CppSharp,zillemarco/CppSharp,inordertotest/CppSharp,mohtamohit/CppSharp,ktopouzi/CppSharp,ddobrev/CppSharp,u255436/CppSharp,mohtamohit/CppSharp