Setup: improving build tools installation

[arthuraraujo-msft]

Related Issues

• Closes Setup.ps1 operation fails on Installing C++ Build Tools if already installed. #197

Why is this change being made?

I went to run setup & build after some time not using cmake and faced an issue with my build tools not being found.
Running setup again did not help either. Turns out I had to manually call vcpkg bootstrap so it set up the latest build tools on its folder so it could be found.

What is being changed?

• Installing vswhere and using it to auto-detect during the setup script there are currently installed VS build tools with the required C++ build components.
• Using --quiet to make the installation silent.
• Calling vcpkg bootstrap on all setup runs to avoid these kinds of issues.
• -NoBuildTools is no longer needed.

How was the change tested?

• Not a functional change. Modifying auxiliary files.
• Ran the setup script a few times locally to test it. It's no longer installing build tools if they're not needed.