Add PhysicalAddress Parse methods documentation

[aik-jahoda]

Summary

Add PhysicalAddress (Try)Parse methods documentation

part of: dotnet/runtime#41446

[carlossanlop]

@dotnet/docs do we allow adding csproj files to this location?

[aik-jahoda]

it would be nice to have guidance. I added the csproj to be able to run the example. It should be easy to run the example so I think it worth to have it part of the examples.

[BillWagner]

We expect the /samples/snippets folder has any samples. We've turned on a CI system in dotnet/docs, and we'll be adding it in this repo shortly. Once it's turned on, any PR that updates sample code will be run through the CI build.

[carlossanlop]

Thanks for the change, @aik-jahoda . I left a couple of suggestions for you to consider, and a question for @dotnet/docs regarding the addition of a csproj.

[opbld34]

Docs Build status updates of commit c222cf3:

✅ Validation status: passed

File	Status	Preview URL	Details
samples/snippets/csharp/VS_Snippets_Remoting/NCLPhysicalAddress/CS/NCLPhysicalAddress.csproj	✅Succeeded
samples/snippets/csharp/VS_Snippets_Remoting/NCLPhysicalAddress/CS/physaddresstester.cs	✅Succeeded	View
xml/System.Net.NetworkInformation/PhysicalAddress.xml	✅Succeeded	View

For more details, please refer to the build report.

Note: Broken links written as relative paths are included in the above build report. For broken links written as absolute paths or external URLs, see the broken link report.

For any questions, please:

• Try searching in the Docs contributor and Admin Guide
• See the frequently asked questions
• Post your question in the Docs support channel

[BillWagner]

This LGTM. I'll now.