Merge pull request #442 from Ennesan/main

Verification of background.yml

Author: Ennesan

src/data/backgrounds.yml

@@ -589,6 +589,7 @@
     slurpodromeWin: RTB777_SlurWin_grid.80
 - background: grid_blackwhite
   name: grid_blackwhite
+  bgm:  General-purpose Background, Supported of 93 Board States, Horizon, Fixed-Point Camera Switch Animation
   download:
   - https://nikkums.io/cswt/Backgrounds/grid_blackwhite.background.zip
   mapIcon: grid_bw