Totally rebuilt how the nuget deploy system works. To deploy projects you simply needs to run push-all.ps1 in the root folder and it will push nuget packages for all Myre projects

It will print a scary looking failure if you're trying to push a version that already exists. This is either because 1. you didn't change that project and everything is totally fine or 2. you forgot to change the version string in AssemblyInfo.cs for that project.

Signed-off-by: Martin Evans <martindevans@gmail.com>