Remake profile picture saving with Vue

[Pytal]

Remake profile picture saving with Vue for accessibility purposes

Legacy code is removed

• OC.Settings.updateAvatar is dropped and is an API break but low impact as it is unused
• Drop deprecated @nextcloud/jcrop dependency

Screenshots

Before	After

[Pytal]

The cropper part was put inline in the page to be inline edited like other fields but we can put it back in a modal like before if desired @jancborchardt @nimishavijay?

[skjnldsv]

The cropper part was put inline in the page to be inline edited like other fields but we can put it back in a modal like before if desired @jancborchardt @nimishavijay?

Not sure we gain that much to be in a modal? Maybe just a little more focus? I think it's fine both ways, so if it's technically easier inline, so be it. But since this is design let's still wait for the design team confirmation :)

[Pytal]

Rebased

Not sure we gain that much to be in a modal? Maybe just a little more focus? I think it's fine both ways, so if it's technically easier inline, so be it.

Not necessarily technically easier just that editing stuff inline in the same place that it's displayed seems more intuitive, other than that don't have a strong leaning either way

[skjnldsv]

Integration is failing https://drone.nextcloud.com/nextcloud/server/22585/22/3

[Pytal]

Rebased with fixed integration tests

[Pytal]

If there are any further changes we should make @jancborchardt @nimishavijay just ping here