Add option to harvest dependencies

[wixbot]

It would be great to have an option to include output of project dependencies, when harvesting a project. It would make harvesting large solutions much easier, or make possible to harvest referenced projects during build time.

heat project MyProj.csproj -pog Binaries -pog Symbols -dependencies -out MyProj.wxs

or

heat project MyProj.csproj -pog Binaries -pog Symbols -pog BinariesDependencies -pog SymbolsDependencies  -out MyProj.wxs

Implementation should be pretty straightforward. Utilize
BuiltProjectOutputGroupDependencies, DebugSymbolsProjectOutputGroupDependencies, DocumentationProjectOutputGroupDependencies, SatelliteDllsProjectOutputGroupDependencies targets to get the required output. Just make sure to filter the result based on CopyLocal metadata to remove system assemblies.

Originally opened by kovalikp

[wixbot]

Needs to be opt-in for v3.x. v4.x could do it automatically.

Release set to v3.x