[ntuple] Add option to preserve BigInt precision for Int64/UInt64 fields

[undefined-panda]

This Pull request:

Changes:

Add boolean variable for ReaderItem to process big integer values for Int64 and UInt64.

Fixes:

Process BigInt fields without losing precision due to Number() and without interferring with treeDraw.

[linev]

Please check eslint warnings.

And one can use much simpler syntax when undefined value is fine.
There is no need for construct like:

const {preserveBigInt = false, ...restArgs} = args;

[undefined-panda]

Thanks for mentioning that! Javascript is a somewhat ... different language.
npm run check doesn't show any errors anymore. I removed the construct

[linev]

All failures with node 20 are unrelated.