add ghostty config and theme

configs/ghostty_g/themes/Desert

@@ -0,0 +1,21 @@
+palette = 0=#4d4d4d
+palette = 1=#ff2b2b
+palette = 2=#98fb98
+palette = 3=#f0e68c
+palette = 4=#cd853f
+palette = 5=#ffdead
+palette = 6=#ffa0a0
+palette = 7=#f5deb3
+palette = 8=#555555
+palette = 9=#ff5555
+palette = 10=#55ff55
+palette = 11=#ffff55
+palette = 12=#87ceff
+palette = 13=#ff55ff
+palette = 14=#ffd700
+palette = 15=#ffffff
+background = 333333
+foreground = ffffff
+cursor-color = 00ff00
+selection-background = b5d5ff
+selection-foreground = 000000