* Fix from functions for BigInt
Allow proper parsing of negative integers in those functions.
Fixes the pannic when calling:
BigInt::from(i128::MIN);
* Fix get_i128 and get_i64 for BigInt
Update the getter logic to take sign into account.
for get_i128 and get_u128 make lossless value consistent with the documentation
(documentation described different behavior then the code logic)
* Extend tests for BigInt types
Add more test cases for negative i64 and i128 to test the created changes
* Simplify the to napiValue logic for 128 bit types
Update the logic to handle negative values properly
Refactor to_napi_value and create_bigint_from_*128 to use the same logic
instead of copping mostly the same code 4 times
* Fix specification for deserialize object test
For unknown reason the binary specification was holding different value than spec file
