VS .proj file helpers

Summary

Helpers to ease manipulation of vs proj files.

General

AddEmbeddedResources(ICakeContext, FilePathCollection, FilePath) Adds absolute/relative file paths into a .proj as embed resource with relative paths
Addin from Cake.ProjHelpers.dll
AddEmbeddedResources(ICakeContext, FilePathCollection, string) Adds absolute/relative file paths into a .proj as embed resource with relative paths
Addin from Cake.ProjHelpers.dll
AddEmbeddedResources(ICakeContext, string[], string) Assuming files in project folder, adds absolute/relative file paths into a .proj file as embed resource (with relative paths to the project file)
Addin from Cake.ProjHelpers.dll