Allow use of lambda-g (and maybe defun-g) without a test compile

[cbaggers]

Once a gpu-function is done, by which I mean will not be recompiled interactively, there is no point having it perform a test compile when the macro is expanded. There is also no point in emitting code to handling recompilation propagation. The advantage would be that we lower the cost of defining these functions and thus make loading faster.

We could achieve this with a :static tag in the &context section of the arguments.

Ideally we would only allow a static function to call other static function, but checking this would require compilation which rather defeats the point :p

[ghost]

Is there something I can do to help with this? It is kind of important for my study, so I will do what I can to help.

[cbaggers]

Phew, id be scared to build my study on such a beta project! But no theres nothing I really need, im on holiday and been working on Varjo a lot (we have reference documentation and a guide now :)

I'll start looking at this in an hour or two

[cbaggers]

The problem with this is that the test compile is used to identify implicit uniforms. We still might be able to do this for lambda-g as it handles its compilation is a different way to defun-g