Add ARM64 hosted pools

[richardpark-msft]

Microsoft introduced an ARM development PC during build, and also released a bunch of developer tooling that runs natively.

• https://arstechnica.com/gadgets/2022/05/microsoft-will-boost-windows-on-arm-with-a-new-dev-kit-and-arm-native-visual-studio/
• https://www.windowscentral.com/hardware/laptops/surface/project-volterra-everything-you-need-to-know](https://www.windowscentral.com/hardware/laptops/surface/project-volterra-everything-you-need-to-know)
• https://www.engadget.com/project-volterra-announced-180123291.html

[richardpark-msft]

(assigning to @kurtzeborn , as suggested by @mikeharder )

[mikeharder]

The request is to add ARM64 hosted pools (Linux and Windows). 1ES Hosted Pools has preview support for ARM64 agents. Open questions:

1. Are the ARM64 images vanilla OS installs, or do they have the same pre-installed software as our existing images?
   1. If they have the same pre-installed software, our existing pipelines should just work.
   2. If they are vanilla OS installs, our pipelines will need to be modified to install pre-requisites.
2. What languages and pipelines should run on ARM64? Only the more "native" languages like Go and C++, or even .NET/Java/JS/Python? All pipelines, or only a few like core and smoke-tests?