Revert "Revert "reimplement std.traits.ParameterStorageClassTuple()""

[WalterBright]

Reverts #5469

Need to find out why it fails in vibe.d

[WalterBright]

@CyberShadow writes:

void async(ARGS...)(ARGS)
{
	import std.functional;

	static void compute(ARGS)
	{
	}

	toDelegate(&compute);
}

alias test = async!(int, int);

[WalterBright]

blocked by dlang/dmd#6897

[wilzbach]

Superseded by #5626