Explain how this extension compares to cmake-tools

[peterschussheim]

Hi,

I saw this closed issue and while informative, it is not complete or updated (I am sure your extension as well as microsoft's cmake-tools have been updated since that post). I propose that a section be added to this repo's readme file with a brief feature comparison (perhaps a table listing feature parity of the two extensions) and recommendations as to why a user would choose one over another.

Thanks