Support System.Decimal

[quajak]

Add support and tests for System.Decimal.

First check what .net 6 gives us out of the box.

[terminal-cs]

Is it not supported like any other types? float and double is supported, why not this?

[quajak]

I don't think Cosmos has supported for decimal yet. It requires additions to IL2CPU IIRC.

[zarlo]

we could do it in c# but it would likely be slower