fix: Add missing advanced machine detection mode

[d-vanhees-micoworks]

Description

First of all, since this is my first PR in this repo, please correct and help by guiding me if I am wrong, thank you 🙇

Background of this PR is to add missing default enum for AdvancedMachineDetectionMode

Motivation and Context

According to the docs in here, there are 3 modes for Advanced Machine detection:

• default
• detect
• detect_beep

However, the first one is missing from AdvancedMachineDetectionMode which means we are unable to use that mode using the provided SDK as-is. Please let me know if this is intentional because advanced machine detection is still in beta.
Also I was unsure what to put as comment. According to documentation, the default value is connect (sync), and not default (async), however when testing out without specifying mode, it sounded as if machine detection was async. So I am unsure whether default is actually default mode or not in the end.

Testing Details

Sorry I was unable to add unit test as I am lacking knowledge of expected request and responses 🙇

Existing test are still passing.

Example Output or Screenshots (if appropriate)

https://developer.vonage.com/en/api/voice#createCall

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[d-vanhees-micoworks]

I am honestly not sure why WhiteSource security has issues accessing my forked repo.
Any insights and suggestions are appreciated 🙇

[manchuck]

@d-vanhees-micoworks WhiteSource will not run for you since your repo cannot access our secrets with all the access keys. Other than that, it looks good. I'm running the actions for the PR then I will cut a patch for you

[d-vanhees-micoworks]

@manchuck Awesome, thank you very much for your review and cutting a patch. 🙇