[Proposal] Add static properties for Locale.NumberingSystem

[glebfann]

This proposal addresses #1052 by adding static properties to Locale.NumberingSystem for standard numbering systems defined in Unicode CLDR.

Swift Forums pitch

[glebfann]

@itingliu Hi! Do you have any thoughts/feedback on this proposal?

[itingliu]

@itingliu Hi! Do you have any thoughts/feedback on this proposal?

Sorry for not replying here. I've been following the discussion on the forum; Thank you for the discussion there!

One comment about the proposal: Can you please include all the proposed variables in this proposal? I understand that's a long list, but having everything listed in the proposal allows consolidating the discussion around, say, naming, in the same place.

[glebfann]

One comment about the proposal: Can you please include all the proposed variables in this proposal? I understand that's a long list, but having everything listed in the proposal allows consolidating the discussion around, say, naming, in the same place.

Done, added all the numbering systems with their documentation.
Thank you for discussing this on the forum as well!