Consider checking in template generated code

[mandarjog]

trafficstars

Mixer2 adapter model defines templates in form of protos. Mixer-Bazel codegen processes the templates to produce other protos and go code.

It is very convenient for an adapter developer to have the generated template artifacts in a repository to browse without needing to run codegen.

This could be checked into mixer or a separate templates repo.

[mandarjog]

@douglas-reid @kyessenov

[guptasu]

@mandarjog can the solution to this issue be: Adapter developer build the mixer and then runs ./bin/bazel_to_go.py ? After this the generated code will all show up in the right directory as symlinks

Thoughts ?

[guptasu]

@mandarjog friendly ping for my comment above. I suggest, we punt this issue for 0.3