Build test snippets when running integration tests. (#1814)
Build test snippets when running integration tests. (#1814)

Converter fails because it includes it's own scripts in its build process (this is a separate issue I will fix).

I didn't call build-npm because it calls rollup which will slow down the integration tests.

DEV
tensorflow/tfjs,tensorflow/tfjs,tensorflow/tfjs,tensorflow/tfjs,tensorflow/tfjs,tensorflow/tfjs,tensorflow/tfjs-core,tensorflow/tfjs-core,tensorflow/tfjs,tensorflow/tfjs-core,tensorflow/tfjs,tensorflow/tfjs-core,tensorflow/tfjs-core,tensorflow/tfjs-core,tensorflow/tfjs