Generate Test Clients during test compilation

[SentryMan]

mostly resolves #584 with a few caveats

• won't generate client methods for controllers with a Context parameter
• won't generate for controllers that use inherited API

There are some bugs to work out using this approach. It seems that during test compilation it causes the classes to get recompiled so inject complains with errors like No dependency provided for org.example.web.myapp.WebController on org.example.web.myapp.WebController$Route

[SentryMan]

It turns out that even trying the traditional way with an annotation doesn't work either. Might have to get creative

[SentryMan]

Figured it out by writing the source into a text file in target during compilation then loading and writing directly during test compilation.

[SentryMan]

let me actually write a test first

[rbygrave]

writing the source into a text file in target during compilation then loading ...

That was cunning!! Well done!!