feat(notif): add Pushbullet and Pushover agents to user notification settings (#1740)

* feat(notif): add Pushbullet and Pushover agents to user notification settings

* docs(notif): add "hint" about user notifications to Pushbullet and Pushover pages

* fix: regenerate DB migration

src/components/UserProfile/UserSettings/UserNotificationSettings/UserNotificationsEmail.tsx

@@ -63,6 +63,9 @@ const UserEmailSettings: React.FC = () => {
           await axios.post(`/api/v1/user/${user?.id}/settings/notifications`, {
             pgpKey: values.pgpKey,
             discordId: data?.discordId,
+            pushbulletAccessToken: data?.pushbulletAccessToken,
+            pushoverApplicationToken: data?.pushoverApplicationToken,
+            pushoverUserKey: data?.pushoverUserKey,
             telegramChatId: data?.telegramChatId,
             telegramSendSilently: data?.telegramSendSilently,
             notificationTypes: {