Improve the Arcane server selection of scales

[AriaSalvatrice]

I'm waiting until Arcane hits the library and people start to understand it before I draw attention to this, but currently, the server has a very conservative selection of music scales.

I'll just copy what I say in the source:

# Once people understand what Arcane does, I'd like to have experts help me
# decide which ones to add, which to omit, which weights would be best.
#
# I AM NOT SEEKING TO ADD A FULL LIST OF EVERY CONCEIVABLE SCALE EVER.
# Please re-read the line above.
#
# I'll avoid using a lot of fancy theory words, and just explain the big idea:
# shoving any random shit into the quantizer should sound fun and musical to
# people from most countries.
#
# Until that conversation happens, I'll start out with a very limited, 
# safe curation, and add more exotic scales later.

Here's the relevant part of the script. You don't have to know the language to understand what it does. https://github.com/AriaSalvatrice/Arcane/blob/f698b7f064bc5355f702dae3bdb940222a6bf3f7/arcane.coffee#L53

[AriaSalvatrice]

There's been very little interest in Arcane so I'll close this for now.