add ghostty config and theme

configs/ghostty_g/themes/Sublette

@@ -0,0 +1,21 @@
+palette = 0=#253045
+palette = 1=#ee5577
+palette = 2=#55ee77
+palette = 3=#ffdd88
+palette = 4=#5588ff
+palette = 5=#ff77cc
+palette = 6=#44eeee
+palette = 7=#f5f5da
+palette = 8=#405570
+palette = 9=#ee6655
+palette = 10=#99ee77
+palette = 11=#ffff77
+palette = 12=#77bbff
+palette = 13=#aa88ff
+palette = 14=#55ffbb
+palette = 15=#ffffee
+background = 202535
+foreground = ccced0
+cursor-color = ccced0
+selection-background = ccced0
+selection-foreground = 202535