Add `<typeparam>` tag support

[FreePhoenix888]

We have enabled type_parameters in config, but it does not work. I mean type_parameters for classes. Does it work if I add this config parameter here? If it will, I would like to know what config parameters are available at all. I think all parameters should be listed in the default config.

[Selectorsvt]

https://github.com/p1va/dotnet-document/pull/5

[p1va]

Thank you @Selectorsvt for looking into this :pray: Would you expect a similar behavior on interfaces as well?

[Selectorsvt]

From my personal experience I think so for interfaces need same behavior.