Basic skeleton of the csproj builder.
Added csproj to build script
Parsing all component needed to generate the csproj
Added pkg-config package modversion and structured reference
more change to msbuild/csproj build generator
Refactored csproj script
added code to populate the Reference libraries
We have a simple work csproj file.

- Missing solution file
- missing other resources
Merge branch 'WIP'

* WIP:
  We have a simple work csproj file.
  added code to populate the Reference libraries
  Refactored csproj script
  more change to msbuild/csproj build generator
  Added pkg-config package modversion and structured reference
  Parsing all component needed to generate the csproj
  Added csproj to build script
  Basic skeleton of the csproj builder.

Conflicts:
	extra/csproj.py