Add Azure AAD/EntraID access settings

[viniciusdc]

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What does this implement/fix?

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds a feature)
• Breaking change (fix or feature that would cause existing features not to work as expected)
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[viniciusdc]

I just need to rename the enabled field since its misleading, its intent is to enable the usage of RBAC roles from Azure instead of the default kuberntes behavior which is an authorization change, works different then the others enabled flags on nebari right now (this does not refer to the actual toggle of this property in the cluster)

[dcmcand]

@viniciusdc is this ready for review?