* docs: add Luma theme to docs
Updates various documentation sections to officially include the new Luma theme.
Adds Luma to the list of available themes and provides its description in relevant configuration and theme files.
Extends "frame" mode compatibility to include the Luma theme, reflecting its support for this layout.
* chore: losslessly compress images
used https://tinypng.com
* feat: update docs to include sequoia theme
* feat: add sequoia to themes list, replace all themes thumbnails
* feat: replace all themes thumbnails in localized themes pages
Brandon McConnell