add ghostty config and theme

configs/ghostty_g/themes/Overnight Slumber

@@ -0,0 +1,21 @@
+palette = 0=#0a1222
+palette = 1=#ffa7c4
+palette = 2=#85cc95
+palette = 3=#ffcb8b
+palette = 4=#8dabe1
+palette = 5=#c792eb
+palette = 6=#78ccf0
+palette = 7=#ffffff
+palette = 8=#575656
+palette = 9=#ffa7c4
+palette = 10=#85cc95
+palette = 11=#ffcb8b
+palette = 12=#8dabe1
+palette = 13=#c792eb
+palette = 14=#ffa7c4
+palette = 15=#ffffff
+background = 0e1729
+foreground = ced2d6
+cursor-color = ffa7c4
+selection-background = 1f2b41
+selection-foreground = ced2d6