[Built-in analyzer] MSBuild task with BuildInParallel is batched

### Background

This issue tracks one of the BuildCheck analyzers we would like to ship in-box with MSBuild.

### Goal

Implement an analyzer with the following rule: The `MSBuild` task is not executed [batched](https://learn.microsoft.com/en-us/visualstudio/msbuild/msbuild-batching#task-batching) when the `BuildInParallel` parameter is true.

### Notes

The intention of `BuildInParallel = true` is to run child builds in parallel. Batching the task, on the other hand, makes it run in a loop, one invocation at a time, which is likely not desired.