Add DeviceNotOnline to error codes

[pregress]

Checklist

• [ ] I have read the contribution guidelines.
• [x] I added or modified the existing tests to cover the change (we do not allow our test coverage to go down).
• [x] This pull-request is submitted against the main branch.

Description of the changes

Added the error code: 404103 for Device online. So users can handle this error gracefully.

Reference/Link to the issue solved with this PR (if any)

Fixes: https://github.com/Azure/azure-iot-sdk-csharp/issues/3442

[timtay-microsoft]

/azp run

[azure-pipelines[bot]]

Azure Pipelines successfully started running 1 pipeline(s).

[pregress]

Any reason why .NET 6 pipelines fail? Can't view the error since it azure devops.

[timtay-microsoft]

/azp run

[azure-pipelines[bot]]

Azure Pipelines successfully started running 1 pipeline(s).

[timtay-microsoft]

/azp run

[azure-pipelines[bot]]

Azure Pipelines successfully started running 1 pipeline(s).

[timtay-microsoft]

We have some security rules in place that make it so forked PRs (like this one) can't access the credentials we use during our integration testing. Could you convert these changes into a branch on this repo instead?

[pregress]

We have some security rules in place that make it so forked PRs (like this one) can't access the credentials we use during our integration testing. Could you convert these changes into a branch on this repo instead?

@timtay-microsoft I do not have permissions to create a branch on this repo

[timtay-microsoft]

Ah, my apologies. I'll go ahead and create that branch for you. #3450 should be merged in shortly

[timtay-microsoft]

Your fix has been merged in #3450, so I'll close this PR