fix to_json for numbers larger than sys.maxsize
- [x] closes #34395 
- [x] tests added / passed
- [x] passes `black pandas`
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [x] passes performance benchmarks
- [x] whatsnew entry

Currently this patch causes a significant reduction for a number of the JSON performance benchmarks. A printout of my results is included below.

[json_benchmarks_results.txt](https://github.com/pandas-dev/pandas/files/4704831/json_benchmarks_results.txt)

I'd love to keep working on this if anybody has ideas for making the solution more efficient!