Enhance for function template & CppType FullName support.

[fangfang1984]

1. add support for function template
2. add inline namespace support
3. change FullName as a CppType property, and deduce the CppClass full name with specialized template right, you can just use CppClass full name in a generated c++ codes now.
4. FindByFullName() now can search auto ignore inline namespace now(such as clang std::__1::vector, now you can just use std::vector to search)
5. fix crash when the CppClass has a specialized template with PartialSpecializedTemplateDecl
6. fix crash when typedef with a AliasTemplateDecl for Underlying type.

[fangfang1984]

I'm trying to do attribute enhance now, include on line attribute support for CppField and CppFunction, also include a special annotate attribute you can pick to use for macro need case. The features for enhanced the meta attribute will be PR after this PR.