C# 2: House keeping

[leo-costa]

• Renamed projects to better reflect the book
• Fix Dockerfile, Makefile and add .editorconfig

[leo-costa]

@vhladko I thought that one my name was on the CODEOWNERS it would allow me to approve and merge the PR. I'm confused now :)

[vhladko]

@leo-costa yes, you will be, soon :)