[Feature request]: neogeo mv-2f,4f,6f

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Describe the feature

The arcade version of the video game hardware is often referred to as the "MVS," or Multi Video System (available in 1-slot, 2-slot, 4-slot, and 6-slot variations, differing in the amount of game cartridges loaded into the machine at the time)

For example, if I want to create an arcade cabinet called Samurai Showdown or Metal Slug, I need to use MV-6F

Metal Slug (MV-6F) Metal Slug Metal Slug 2 Metal Slug 3 Metal Slug 4 Metal Slug 5 Null (Slot 6)

an arcade cabinet called Art of Fight or Fatal Fury, I need to use MV-4F

Art of Fight (MV-4F) Art of Fight Art of Fight 2 Art of Fight 3 Null (Slot 4)

other arcade cabinet MV-1F (Emulator Default) and MV-2F

Add screenshots

No response

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I heard that the current MAME seems to support these hardware features