`CompileToRawBinary` does not handle `OpCode::Type::MultiplyAdd`

[Wunkolo]

Calling nihstro::InlineAsm::CompileToRawBinary with an OpCode::Id::MAD instruction causes an Unknown instruction exception to throw.

nihstro/include/nihstro/inline_assembly.h

Lines 400 to 402 in e924e21

	default:
	throw "Unknown instruction";

OpCode::Id::MAD is a OpCode::Type::MultiplyAdd which is unhandled by the switch-case and uses the exception-throwing default:-case.