[feature request] melonds - return RTC value (somehow)

Actionable points:

• Expose the RTC as a register, or otherwise expose it on the core with a function in the nds Lua library for reading it

Original post follows.

Since the NDS is becoming supported in the developement versions of bizhawk via MelonDS, I wanted to share those 2 features which would be useful.

Lid hotkey to set it open/closed:
This would be useful as the seed would be stuck while the internal date advances: this way you can advance the date to the one you desire and still advance the frame independently to be able to hit a determinate initial seed on the pokemon games when pressing on the "Continue" button in an easy way.

Date: Well, this would work along with the lid hotkey, effectively showing the internal clock while doing the advancements.
This would also work for gba games (RS only for pokemon), so you can see by the date if you hit the correct seed.