add handling for local message deleting

app/src/main/kotlin/com/simplemobiletools/smsmessenger/extensions/Context.kt

@@ -502,6 +502,7 @@ fun Context.deleteConversation(threadId: Long) {
     contentResolver.delete(uri, selection, selectionArgs)
 
     conversationsDB.deleteThreadId(threadId)
+    messagesDB.deleteThreadMessages(threadId)
 }
 
 fun Context.deleteMessage(id: Long, isMMS: Boolean) {
@@ -510,6 +511,7 @@ fun Context.deleteMessage(id: Long, isMMS: Boolean) {
     val selectionArgs = arrayOf(id.toString())
     try {
         contentResolver.delete(uri, selection, selectionArgs)
+        messagesDB.delete(id)
     } catch (e: Exception) {
         showErrorToast(e)
     }

app/src/main/kotlin/com/simplemobiletools/smsmessenger/interfaces/MessagesDao.kt

@@ -25,4 +25,10 @@ interface MessagesDao {
 
     @Query("UPDATE messages SET read = 1 WHERE thread_id = :threadId")
     fun markThreadRead(threadId: Long)
+
+    @Query("DELETE FROM messages WHERE id = :id")
+    fun delete(id: Long)
+
+    @Query("DELETE FROM messages WHERE thread_id = :threadId")
+    fun deleteThreadMessages(threadId: Long)
 }