Make SolidityCompiler execution configurable

[3Nigma]

While deploying our HeadStarter NFT market, it became obvious that, in an attempt to lower the bytecode size, we would need to configure the solidity compiler optimizer as well.

We ended up using this:

as the compiler settings.

We need to have conventions in place to allow runtime configuring of the compiler itself. We need to discuss how that might look like.