Bundle Gwen Dark (Hallowed Night) and Gwen Light in assets/themes/gwen,
derived from the champion's canon palette: hallowed mist cyan for
accents/functions, Gwen blue for types, violet for keywords, Camavor
gold for constants, pink-stitching rose for properties, mist mint for
strings over a Black Mist night base.
Set Gwen as the default theme pair in settings and the shipped settings
templates, surface it as the first tile in the onboarding theme picker
and the theme preview gallery, and guard the family with a bundled
theme regression test.
Closes #ISSUE
Post #43854, we are advertising trailing comma support for our asset
`jsonc` files to the JSON LSP. This results in it adding trailing commas
on format of these files. This PR batch updates the formatting for these
files, so they are not spuriously added as part of other PRs that happen
to modify these files
Release Notes:
- N/A *or* Added/Fixed/Improved ...
yenru0
Ben Kunkle