improve definition of constructor args

[zeroXbrock]

Is your feature request related to a problem? Please describe.

Passing constructor args when writing [[create]] directives is painstaking and error-prone. You have to zero-pad and append the args to the raw bytecode. This makes updating the bytecode later very tedious.

Describe the solution you'd like

• add a new args = [...] field to the [[create]] directive; same design as setup/spam directives.
• zero-pad args automatically
• append passed args to bytecode

Describe alternatives you've considered

• perpetual suffering