Add "copy by tap" functionality

[korve]

Add "copy by tap" functionality

This copies the code when tapping on the code after revealing it (see video)

Fixes #304

Simulator.Screen.Recording.-.iPhone.14.Pro.-.2023-06-26.at.12.07.28.mp4

[justin-stephenson]

Hi,

Thank you for the PR. I would prefer to have an option to enable/disable this feature (as in FreeOTP Android), as some users may not want to enable automatic copy-to-clipboard functionality for security reasons.

I would also suggest removing the "Copied" text. If some visual indication is needed then a small clipboard icon pop-up or notification would be better in my opinion.

[amarshall]

@justin-stephenson This appears to not be automatic copy, but copying when the user explicitly taps the entry.

[falghamdi125]

Sounds cool!

The typical Apple iOS method for copying a read-only field is by performing a long press, which brings up a small copy popover that allows you to copy the value to the clipboard.

You can test by going to any read only value. E.g. Settings > General > About > Model Name

ESET Secure Authentication uses long press to copy to clipboard which I think is good too.

[justin-stephenson]

@justin-stephenson This appears to not be automatic copy, but copying when the user explicitly taps the entry.

If I understand correctly, this PR will always copy the token when the token is tapped. My comment is that a user should have the ability to disable this functionality, so that tapping token code will only display the token code and not copy it to clipboard (or it can, if 'copy-to-clipboard' boolean is enabled by the user elsewhere). I am also okay with the suggestion from @falghamdi125