[Feature Request] Add Tap Zones and Invert Tap Zones to bottom buttons options

[kpervin]

Describe your suggested feature

Having the option to quickly invert tap zones and/or change the tap zones via the bottom bar would be greatly appreciated.

Other details

I sometimes find myself changing which hand I'm holding my e-reader with, and being able to change which side of the screen progresses without having to go deep into the settings would be great.

Acknowledgements

• I have searched the existing issues and this is a new ticket, NOT a duplicate or related to another open issue.
• I have written a short but informative title.
• If this is an request for a feature in the original Tachiyomi, I am opening because multiple versions of TachiyomiJ2K have been released without this feature.
• If this is an issue with an extension, or a request for an extension, I should be opening an issue in the extensions repository.
• I have updated the app to version 1.7.1.
• I have checked through the app settings for my feature.
• I have admitted that I am a clown by having checked this box, as I have not read these acknowledgements.
• I will fill out all of the requested information in this form.