add ghostty config and theme

configs/ghostty_g/themes/Raycast_Dark

@@ -0,0 +1,21 @@
+palette = 0=#000000
+palette = 1=#ff5360
+palette = 2=#59d499
+palette = 3=#ffc531
+palette = 4=#56c2ff
+palette = 5=#cf2f98
+palette = 6=#52eee5
+palette = 7=#ffffff
+palette = 8=#000000
+palette = 9=#ff6363
+palette = 10=#59d499
+palette = 11=#ffc531
+palette = 12=#56c2ff
+palette = 13=#cf2f98
+palette = 14=#52eee5
+palette = 15=#ffffff
+background = 1a1a1a
+foreground = ffffff
+cursor-color = cccccc
+selection-background = 333333
+selection-foreground = 000000