add ghostty config and theme

configs/ghostty_g/themes/Purple Rain

@@ -0,0 +1,21 @@
+palette = 0=#000000
+palette = 1=#ff260e
+palette = 2=#9be205
+palette = 3=#ffc400
+palette = 4=#00a2fa
+palette = 5=#815bb5
+palette = 6=#00deef
+palette = 7=#ffffff
+palette = 8=#565656
+palette = 9=#ff4250
+palette = 10=#b8e36e
+palette = 11=#ffd852
+palette = 12=#00a6ff
+palette = 13=#ac7bf0
+palette = 14=#74fdf3
+palette = 15=#ffffff
+background = 21084a
+foreground = fffbf6
+cursor-color = ff271d
+selection-background = 287691
+selection-foreground = ffffff