feat(functions): CachedCallable and raw functions #310

[kakserpom]

Implements #310

[ptondereau]

This is mostly good from my point of view! Thank you for this PR

[ptondereau]

LGTM thank you!

[coveralls]

Pull Request Test Coverage Report for Build 20554631838

Details

• 96 of 139 (69.06%) changed or added relevant lines in 5 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+1.7%) to 37.686%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/args.rs	37	38	97.37%
benches/function_call.rs	0	6	0.0%
src/types/callable.rs	52	58	89.66%
crates/macros/src/function.rs	0	30	0.0%

Totals
Change from base Build 20553343606:	1.7%
Covered Lines:	1948
Relevant Lines:	5169

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💛 - Coveralls

[Xenira]

Should use platform independent benchmarks from #602 for this

[kakserpom]

Should use platform independent benchmarks from #602 for this

Well #602 is still in the works, you can merge this one and then replace the benchmarks with yours in #602 or you can merge #602 first...

[Xenira]

@kakserpom I will try to have all benchmarks in #602 to get a baseline.

Another thing we might want to consider is having the plain callable initialize the function info cach lazily to have it perform better as well. Not sure if we should just merge those two and have the option to set it to lazy / eager / no caching.