Safari requires some user interaction to subscribe to push notifications ([see this](https://developer.apple.com/documentation/usernotifications/sending_web_push_notifications_in_web_apps_safari_and_other_browsers)), so this PR adds a button to the navigation menu that requests notification permissions and does the subscription stuff. It also hides the "Mobile App" button from PWA
Side effect of this PR is that push permissions aren't gonna be requested automatically on other platforms anymore like they used to. Also it's probably a good idea to add this button somewhere else too because it's not very accessible on desktop
![image](/attachments/f2f78028-9e5f-484f-aa98-59eb60e3ccd5)
Co-authored-by: borntolurk <borntolurk@rdrama.net>
Reviewed-on: rDrama/rDrama#158
Co-authored-by: borntolurk <borntolurk@noreply.fsdfsd.net>
Co-committed-by: borntolurk <borntolurk@noreply.fsdfsd.net>