fix(Flow Types): Fixed Flow typing to allow for omitting options when using the options param

[FermiDirak]

Currently options are an all or nothing parameter. This means if you want to specify the tabStop, you must specify every other option if using Flow. This PR splits the Options type to OptionParams and Options so that options can be independently specified when using the options param.

[FermiDirak]

I'm open to adding tests for this PR

[vvo]

@FermiDirak why not just updating the already in place Options type definition (warning: I am new to Flow)

[FermiDirak]

@vvo Flow isn't able to infer default values in a function signature, so when you consume reactElementToJsxString and use Flow, the Options argument must be specified with all its properties defined.

The problem with updating the Options type is that some of the methods in the library require all of optionss properties to be defined. The way to circumvent Flow not inferring defaults is to create a separate type for the function signature.

[armandabric]

To avoid the duplication you could use the $Shape special keyword

Here an example:
https://flow.org/try/#0PQKgBAAgZgNg9gdzCYAoVAXAngBwKZgDyOGAlnAHYDOYAvGAN4A+UccAXGBQK4C2ARngBOAGjD8AhkM782MPBIpMAvplwFiZSgAUpE3jXoASAMoALCfgA8m8tQB8qMGHQAKBqw5gALACZl7LY6egYAlADcbgyS0mAA5BRwGGAS4nIKFHEBQRS6QvpUEUA