Add Interlocked unsigned and bitwise operations

[stephentoub]

Fixes #24694
Fixes #23819

@GrabYourPitchforks, are the Xor methods really necessary? Where do you expect them to be used?

cc: @jkotas, @GrabYourPitchforks, @tannergooding

[Dotnet-GitSync-Bot]

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[GrabYourPitchforks]

are the Xor methods really necessary? Where do you expect them to be used?

I see some unmanaged usage with regard to job scheduling, but the scenarios for this (at least in C#) don't seem as clear-cut as the scenarios for And and Or. I'm not going to be terribly sad if we decide to nix Xor. It was really just for logical operator completeness.

[stephentoub]

I'm not going to be terribly sad if we decide to nix xor

Ok, I'm going to remove it. I want to add things only when there's a strong demonstrated need, and I'm not seeing that for xor.