feat: Mount already patched apk

[Vojtak42]

Feature description

Hi,
Could you please add an option to mount already patched apks? Because an app (YT) sometimes unmounts for me (maybe after restarting) and I have to patch the whole app again, even though the revanced manager still has an apk file of the latest patched version of the app backed up, but it only offers regular installation.
Thanks

Installation type shows as regular even though the app was mounted after patching, and it can't be changed.

Motivation

Saving a lot of time for rooted users

Acknowledgements

• I have checked all open and closed feature requests and this is not a duplicate.
• I have chosen an appropriate title.
• The feature request is only related to ReVanced Manager.

[Vaibhav1579]

@Vojtak42 are you using apatch as your root manager ??

[Vojtak42]

@Vaibhav1579 KSUNext