Support HCX Addone in AZ.VMware

[dingmeng-xue]

Discussed in #17580

^{Originally posted by Trevor-Davis March 23, 2022}
For Az.VMware module there is already the ability to add 2 of the 3 add-ons via Az Powershell. We are missing the ability to add HCX as a VMware Add-on.

the Az CLI command does exist, which is https://docs.microsoft.com/en-us/cli/azure/vmware/addon/hcx?view=azure-cli-latest#az-vmware-addon-hcx-create