Lack of automated testing

[JayFoxRox]

Ideally we should have a number of unit tests which can be shared legally (so using OpenXDK or preferrably NXDK).
Additionally tracing tools which can be automated would be welcome.

(Related to #77 )

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Overall we should start by setting up guidelines and a test framework.
If we don't setup guidelines early on this will result in test fragmentation as it happened to Citra: everyone has their own unit tests and it's incredibly hard to automate running all of them. Also they are scattered all over the internet.