[Feature] support for /e/os webdav accounts

[Derisis13]

Is your feature request related to a problem? Please describe.

/e/os has a built-in webdav client. It's a fork of dav5x, the source is accessible here: https://gitlab.e.foundation/e/os/AccountManager
JTX board currently doesn't recognize this as a viable backend.

Describe the solution you'd like

I wish to use this built-in account manager/webdav client as a synchronization backend instead of separately installing dav5x.

Describe alternatives you've considered

Dav5x works fine for synchronization, as far as I can tell, it isn't bothered by the /e/ client.

Additional context

If work from the /e/ side is required to achieve this, leave it be, since I can't upgrade to the latest release due to a bug.

Your current device and version

• Device: [Xiaomi Redmi Note 8T]
• Android version: [Android 13]
• jtx Board version: [2.09.01]
• Downloaded from: [/e/'s "App Lounge", which I think gets it from F-droid but I'm not 100% on that]

[BaumiCoder]

The reason for this problems seems to be a change in DAVx5 fork of the /e/ project, as @patrickunterwegs explaint in a GitHub Dicussion. An issue at /e/ project about this exists here, but was closed as inactive.

[Derisis13]

Oh I see. Sorry I made a duplicate, I didn't look at the discussions, only issues.
I find it very unlikely that /e/ will do anything about their fork, it hasn't seen any activities for years from what I've seen.
Feel free to close the issue if there's nothing you can do with reasonable effort.