[RFC] TVM Object Schema DSL

Hi @comaniac,

They will be tracked in the repo. But user should write the tschema for objects instead of writing the cpp files directly except the tschema-custom part.

Sorry that I did not make it clear, there actually no such “before generation” files. Finally we will keep the generated code in our codebase and normal users will build them directly. I just use the code snippets to explain what’s tschema’s job.