Support for #project height=0

• Support for finding projects of certain "height", or "depth", or "rank" - height=0 finds projects with no references, height=1 finds projects referencing those, and so on. height=max finds projects that form the longest dependency chain. https://github.com/KirillOsenkov/MSBuildStructuredLog/wiki/Search-Syntax#project-heightn
• if a task has more than 10 messages underneath, they will be grouped in a subfolder

Full Changelog: v2.2.336...v2.2.342