Support swipe up gesture for dismissing dialogs

[ammarmbe]

Before submitting a new issue

• I tested using the latest version of the library, as the bug might be already fixed.
• I tested using a supported version of react native.
• I checked for possible duplicate issues, with possible answers.

Bug summary

Please support swiping up to dismiss dialogs, similar to the current swipe down behavior, as swipe up appears to be the more intuitive gesture (to me at least).

Library version

1.0.0-rc.3

Environment info

-

Steps to reproduce

-

Reproducible example repository

[vvv-sss]

Hey, thank you for your PR. We appreciate it so much. Will check it out soon.