Add option to set some default User properties
Add option to set some default User properties

- for `deviceLimit` and `expirationTime`.

joseant/traccar-1,al3x1s/traccar,AnshulJain1985/Roadcast-Tracker,tsmgeek/traccar,jssenyange/traccar,orcoliver/traccar,stalien/traccar_test,jssenyange/traccar,al3x1s/traccar,5of9/traccar,orcoliver/traccar,vipien/traccar,5of9/traccar,ninioe/traccar,tananaev/traccar,stalien/traccar_test,jssenyange/traccar,tananaev/traccar,tsmgeek/traccar,jon-stumpf/traccar,AnshulJain1985/Roadcast-Tracker,orcoliver/traccar,duke2906/traccar,renaudallard/traccar,ninioe/traccar,jon-stumpf/traccar,duke2906/traccar,joseant/traccar-1,renaudallard/traccar,ninioe/traccar,vipien/traccar,jon-stumpf/traccar,tsmgeek/traccar,tananaev/traccar