Username editing (room specific and global)

Currently translated at 81.2% (359 of 442 strings)

Co-authored-by: maxigaz <maxigaz@protonmail.com>
Translate-URL: https://weblate.nheko.im/projects/nheko/nheko-master/hu/
Translation: Nheko/nheko

Currently translated at 84.6% (374 of 442 strings)

Translated using Weblate (Russian)

Currently translated at 84.6% (374 of 442 strings)

Co-authored-by: Alexey Murz Korepov <murznn@gmail.com>
Co-authored-by: Artem <ego.cordatus@gmail.com>
Translate-URL: https://weblate.nheko.im/projects/nheko/nheko-master/ru/
Translation: Nheko/nheko

Currently translated at 71.7% (317 of 442 strings)

Co-authored-by: maxigaz <maxigaz@protonmail.com>
Translate-URL: https://weblate.nheko.im/projects/nheko/nheko-master/hu/
Translation: Nheko/nheko

Center user info dialog on the screen

Username can be edited by double clicking on text, added global user profile menu action in user info widget

Currently translated at 100.0% (442 of 442 strings)

Co-authored-by: Priit Jõerüüt <nhkwlate@joeruut.com>
Translate-URL: https://weblate.nheko.im/projects/nheko/nheko-master/et/
Translation: Nheko/nheko

fixes #421

Currently translated at 100.0% (438 of 438 strings)

Co-authored-by: Priit Jõerüüt <nhkwlate@joeruut.com>
Translate-URL: https://weblate.nheko.im/projects/nheko/nheko-master/et/
Translation: Nheko/nheko

Currently translated at 62.7% (273 of 435 strings)

Co-authored-by: maxigaz <maxigaz@protonmail.com>
Translate-URL: https://weblate.nheko.im/projects/nheko/nheko-master/hu/
Translation: Nheko/nheko

Currently translated at 53.7% (234 of 435 strings)

Co-authored-by: maxigaz <maxigaz@protonmail.com>
Translate-URL: https://weblate.nheko.im/projects/nheko/nheko-master/hu/
Translation: Nheko/nheko

* Add handles for window focus gained / focus lossed and connect to timer
* Clean up some of the PrivacyScreen.qml code
* Connect settings to PrivacyScreen visibility