add ghostty config and theme

configs/ghostty_g/themes/Darkside

@@ -0,0 +1,21 @@
+palette = 0=#000000
+palette = 1=#e8341c
+palette = 2=#68c256
+palette = 3=#f2d42c
+palette = 4=#1c98e8
+palette = 5=#8e69c9
+palette = 6=#1c98e8
+palette = 7=#bababa
+palette = 8=#000000
+palette = 9=#e05a4f
+palette = 10=#77b869
+palette = 11=#efd64b
+palette = 12=#387cd3
+palette = 13=#957bbe
+palette = 14=#3d97e2
+palette = 15=#bababa
+background = 222324
+foreground = bababa
+cursor-color = bbbbbb
+selection-background = 303333
+selection-foreground = bababa