Refactor more forms (#4676)

app/assets/locales/en.json

app/assets/stylesheets/admin_panel.scss

...avascript/components/admin/roles/forms/CreateRoleForm.jsx

...mponents/admin/site_settings/administration/LinksForm.jsx

...javascript/components/rooms/room/forms/CreateRoomForm.jsx

app/javascript/helpers/forms/AvatarFormHelpers.jsx

app/javascript/helpers/forms/CreateInvitationHelpers.jsx

app/javascript/helpers/forms/CreateRoleFormHelpers.jsx

app/javascript/helpers/forms/CreateRoomFormHelpers.jsx

app/javascript/helpers/forms/LinksFormHelpers.jsx

app/javascript/hooks/forms/admin/roles/useRoleForm.js

...avascript/hooks/forms/admin/site_settings/useLinksForm.js

app/javascript/hooks/forms/rooms/useRoomForm.js