feat: Add Select from Installed Apps option in Signature cloning #645

Currently, user can only select the apk source from local. But if any app developer has added anti-tampering like protection, then installing it from apk or apks is not possible. Because it'll check that anti tampering.

So, if we'd an option to select the app directly from the Installed one will be better. So, that manager will try to clone the signature directly from the installed one. Maybe this'll somehow bypass the anti tampering protection.. As we're directly trying to clone it from the installed one.

As for those apps, apkmirror also doesn't provide any xapk or apk.