add other solidity compilers as commands

[serapath]

@todo

• add dexon solidity compiler as an (un)installable command to play
• add rsk/roostock solidity compiler as an (un)installable command to play

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There are many blockchain projects out there other than ethereum and many of them also started supporting the solidity smart contract programming language. We want to support the deployment of solidity smart contracts to other networks.