Avoid compiling Test/Script toplevel contracts w/ zksolc

[Karrq]

The bytecode size limitation is a very painful point for projects to migrate to zksync.

In many cases, this limitation is hit by test or scripts, not the actual contracts themselves.

Considering the current architecture, these contracts are never deployed on the EraVM, therefore they shouldn’t need to be compiled for EraVM

[elfedy]

The main challenge with this is that the compiler operates in terms of files and not contracts, so when tests/script source files also include contracts, we would need to parse the file, and remove the test contract in place, keeping the rest.
The ROI is probably there though as the UX improvement would be quite big. Maybe a good first iteration of this is enabling the test/script skipping via a flag.