Add Logic to check queue count

Currently the queue is set to just pop the entry out of the stack but this will raise errors if the stack is empty. Instead it can check for an empty queue and then exit gracefully or perform another task (Like a thank you message or a request to send more posts)

```
msg = queue.receive_messages().next() # TODO: Add Logic to check queue count
```

https://github.com/kjaymiller/31DaysofNeurodivergenceTweets/blob/3846691957b4eeebf56b8aab729f6cbb1dd514a4/TimerTrigger/__init__.py#L12

Start in TimerTrigger/__init__.py at the queue.receive_messages().next() call and inspect how the Azure queue is configured and consumed. Reproduce the empty-queue case, then verify the chosen graceful behavior without raising an exception; no test file is mentioned in the issue.

Written by the indexing model from the issue text.