feat: add bigint type as value parameter

[frani]

bigint nowadays is commonly used

[dougwilson]

Thanks, I agree, it should work. But this seems like it will be confusing, because it won't actually work with actual big numbers still as this change just converts it to the Number.

[frani]

@dougwilson you are right!

going to work out on it to make it fully functional with bigint.

later going to commit new change in this branch.