Add linter for msbuild scripts

There isn't one at the current moment but there is some work in progress: https://github.com/dotnet/msbuild/blob/main/documentation/specs/proposed/BuildCheck.md

The plan of release is in .net 9: https://github.com/dotnet/msbuild/blob/main/documentation/specs/proposed/BuildCheck.md#configuration

Start by reading documentation/specs/proposed/BuildCheck.md in the linked MSBuild repository, especially its configuration section and planned .NET 9 release. Then inspect this repository for MSBuild-related entry points; the issue does not identify files, tests, or a sufficiently defined completion scope.

Written by the indexing model from the issue text.