Add incognito option in the overflow menu

[Norsze]

Describe your suggested feature

Add an incognito option to the overflow menu as it is an option that is supposed to be turned on and the off again everytime it is turned on, aka it is not supposed to be permanently on or off like other options.

This is already present in all the forks that use J2K UI as base.

Other details

Acknowledgements

• I have searched the existing issues and this is a new ticket, NOT a duplicate or related to another open or closed issue.
• I have written a short but informative title.
• I have updated the app to version 0.17.1.
• I will fill out all of the requested information in this form.