add ghostty config and theme

configs/ghostty_g/themes/Grey-green

@@ -0,0 +1,21 @@
+palette = 0=#000000
+palette = 1=#fe1414
+palette = 2=#74ff00
+palette = 3=#f1ff01
+palette = 4=#00deff
+palette = 5=#ff00f0
+palette = 6=#00ffbc
+palette = 7=#ffffff
+palette = 8=#666666
+palette = 9=#ff3939
+palette = 10=#00ff44
+palette = 11=#ffd100
+palette = 12=#00afff
+palette = 13=#ff008a
+palette = 14=#00ffd3
+palette = 15=#f5ecec
+background = 002a1a
+foreground = ffffff
+cursor-color = fff400
+selection-background = 517e50
+selection-foreground = e2e2e2