Feat/ntfy (#57)

* implement ntfy notification

* fix notification fields order

* fix schema for ntfy

---------

Co-authored-by: yusing <yusing@6uo.me>

internal/notif/config.go

@@ -38,6 +38,8 @@ func (cfg *NotificationConfig) UnmarshalMap(m map[string]any) (err E.Error) {
 		cfg.Provider = &Webhook{}
 	case ProviderGotify:
 		cfg.Provider = &GotifyClient{}
+	case ProviderNtfy:
+		cfg.Provider = &Ntfy{}
 	default:
 		return ErrUnknownNotifProvider.
 			Subject(cfg.ProviderName).