[FEAT] WebDAV-only version

[ltguillaume]

As far as I know, the online version of Keepass2Android contains a large sum of 3rd party libraries.

To my knowledge, this is proprietary code and even if it is open source, Keepass2Android cannot vouch for the intentions of these libraries.

Synchronization is, however, a vital part of the app (as stated in the Wiki).

I'm just asking if you can be 100% certain these SDKs/libraries do not exhibit any activity when the respective cloud storage isn't used.

I have a good experience with WebDAV sync in Keepass2Android (using Nextcloud), whereas I've found that using separate sync apps for this task to be very problematic.

As such, perhaps it would be a good option to release a WebDAV-only version of the app, so that in-app synchronization is still possible, while 3rd party libraries provided by shady companies are kept out and permissions are kept to a minimum.