This PR intends to return the perkeep app to the android playstore
* Bump to Gradle 7.1.2, Android SKD 32
* Intents need to get the flag PendingIntent.FLAG_IMMUTABLE/MUTABLE
* Assets are no longer executable, get around that by using
'extractNativeLibs=true' and executing from the lib path
* Apply several refactoring suggestions by Android Studio
* Rework resources Makefile
* Rename camlistore to perkeep where appropriate ( not the app id )
* Remove AsyncTask; fix Typo in Upload Thread; some refactorings
* Fix auto upload; fix double spurious double uploads
* Retry getFileDescriptor a few times since it races with inotify
* Add /Pictures to watched directories
* Delegate to pk-put to get version
* Fix build.gradle and Makefile to publish apk
Michael Hoffmann