Show 2 checks when sms is delivered

- differentiate between sent sms and delivered sms by updating the SmsStatusSentReceiver which updates the type to Telephony.Sms.MESSAGE_TYPE_SENT or Telephony.Sms.MESSAGE_TYPE_FAILED depending on the outcome.
- rename ThreadSuccess to ThreadSent and add a boolean field for the delivery status
- SmsStatusSentReceiver updates the status of the message to Telephony.Sms.STATUS_COMPLETE.
- accommodate for the need to keep track of the status by adding Int field status to the Message class,
- add appropriate database migrations (3 to 4) for the new status field.
- add status to the query for sms in extension function Context.getMessages and Context.getMMS
- add extension function Context.updateMessageStatus to update the status of a message in the database

app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/ThreadActivity.kt

@@ -569,8 +569,8 @@ class ThreadActivity : SimpleActivity() {
                 conversationsDB.markRead(threadId)
             }
 
-            if (i == cnt - 1 && message.type == Telephony.Sms.MESSAGE_TYPE_SENT) {
-                items.add(ThreadSuccess(message.id))
+            if (i == cnt - 1 && (message.type == Telephony.Sms.MESSAGE_TYPE_SENT )) {
+                items.add(ThreadSent(message.id, delivered = message.status == Telephony.Sms.STATUS_COMPLETE))
             }
         }