chore(logging): decimal stint values

[AuHau]

If the normal "to-string" operator ($) or default conversion is used on StInt values in logging, then hex encoded values are returned. This changes it to decimal values, but only for one entry 😳

Is there some way to say chronicles to use the stint's toString function (which by default returns decimal values) on StInt types?

[emizzle]

Yes there is. You need to create and/or import a nim-serialization writeValue that produces decimals (can use $ to achieve this). There is one in nim-eth that can be imported for convenience or we can roll our own.