add option to set NSG and UDR on subnets in hub-vnet

[picccard]

Overview/Summary

This PR fixes/adds/changes/removes

This covers the issues in #512. This adds the option to set UDR and NSG on subnets in the hub-network, through the parameterfile for hubNetworking.

Breaking Changes

1. None, as both new features are optional.

Testing Evidence

Works as intended, however

1. Setting setting a nsg for the AzureBastionSubnet in the parSubnets parameter will have no effect.
2. The AzureBastionSubnet is hardcoded to use the nsg created by the module itself

As part of this Pull Request I have

• Read the Contribution Guide and ensured this PR is compliant with the guide
• Ensured the resource API versions in .bicep file/s I am adding/editing are using the latest API version possible
• Checked for duplicate Pull Requests
• Associated it with relevant GitHub Issues
• (ALZ Bicep Core Team Only) Associated it with relevant ADO Items
• Ensured my code/branch is up-to-date with the latest changes in the main branch
• Performed testing and provided evidence.
• Updated one or more of the following tests (if required)
  • Unit
  • Linting
  • E2E (End-To-End)
  • ValidateAzCloud (Base validation in Azure Cloud)
  • ValidateMcCloud (Base validation in Azure China Cloud)
• Updated relevant and associated documentation (e.g. Contribution Guide, Module READMEs, Wiki Docs etc.)
• If relevant, created or updated Code Tours here

[jtracey93]

@picccard thanks for your work here, are you able to pull in the latest from main and resolve the merge conflicts caused by #510 (as planned)

If you are able to get this in today it will likely make the v0.14.0 release this evening :)

[picccard]

@jtracey93 conflicts have been resolved

[jtracey93]

/azp run validateazcloud

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