Add Sentinel to architecture

[DeanGross]

Is your feature request related to a problem? Please describe.

I don't see Microsoft Sentinel in the architecture diagram.

Describe the solution you'd like
A clear and concise description of what you want to happen.
I'd like to see where Sentinel should be included to most effectively monitor the other resources

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.

[azure-lm]

Thanks for submitting this feature request! This item will be discussed during our next triage session as having guidance around recommended Sentinel usage seems reasonable, and I will follow up here afterwards.