add ghostty config and theme

configs/ghostty_g/themes/Oxocarbon

@@ -0,0 +1,21 @@
+palette = 0=#161616
+palette = 1=#3ddbd9
+palette = 2=#33b1ff
+palette = 3=#ee5396
+palette = 4=#42be65
+palette = 5=#be95ff
+palette = 6=#ff7eb6
+palette = 7=#f2f4f8
+palette = 8=#585858
+palette = 9=#3ddbd9
+palette = 10=#33b1ff
+palette = 11=#ee5396
+palette = 12=#42be65
+palette = 13=#be95ff
+palette = 14=#ff7eb6
+palette = 15=#f2f4f8
+background = 161616
+foreground = f2f4f8
+cursor-color = ffffff
+selection-background = 393939
+selection-foreground = 161616