ACR: Parse 'ModuleList' from ACR server metadata to populate 'Dependencies' in PSResourceInfo object

[alerickson]

PR Summary

This PR helps support Az module dependencies, since Az does not list their dependencies under RequiredModules in the module manifest and instead under dependencies in the .nuspec.

This change parses ModuleList from the metadata property in the ACR server manifest to read all dependencies for the module and populate that into the PSResourceInfo object.

PR Context

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