add ghostty config and theme

configs/ghostty_g/themes/UnderTheSea

@@ -0,0 +1,21 @@
+palette = 0=#022026
+palette = 1=#b2302d
+palette = 2=#00a941
+palette = 3=#59819c
+palette = 4=#459a86
+palette = 5=#00599d
+palette = 6=#5d7e19
+palette = 7=#405555
+palette = 8=#384451
+palette = 9=#ff4242
+palette = 10=#2aea5e
+palette = 11=#8ed4fd
+palette = 12=#61d5ba
+palette = 13=#1298ff
+palette = 14=#98d028
+palette = 15=#58fbd6
+background = 011116
+foreground = ffffff
+cursor-color = 4afcd6
+selection-background = 415555
+selection-foreground = 4dffda