This PR cleanup the UserEditor code a bit, 2 texts are added for "Name" and "User Id", because when you create a new profile, the textbox is empty without any hints. `axaml` files are autoformated too.
* remove content dialog placeholder from all windows
* remove redundant window argument
* redesign user profile window
* wip
* use avalonia auto name generator
* add edit and new user options
* move profile image selection to content dialog
* remove usings
* fix updater
* address review
* adjust avatar dialog size
* add validation for user editor
* fix typo
* Shorten some labels
* Add all other windows
* addreesed review
* Prevent "No Update" option from being deleted
* Select no update is the current update is removed from the title update window
* fix amiibo crash
