add ghostty config and theme

configs/ghostty_g/themes/Dark+

@@ -0,0 +1,21 @@
+palette = 0=#000000
+palette = 1=#cd3131
+palette = 2=#0dbc79
+palette = 3=#e5e510
+palette = 4=#2472c8
+palette = 5=#bc3fbc
+palette = 6=#11a8cd
+palette = 7=#e5e5e5
+palette = 8=#666666
+palette = 9=#f14c4c
+palette = 10=#23d18b
+palette = 11=#f5f543
+palette = 12=#3b8eea
+palette = 13=#d670d6
+palette = 14=#29b8db
+palette = 15=#e5e5e5
+background = 1e1e1e
+foreground = cccccc
+cursor-color = ffffff
+selection-background = 3a3d41
+selection-foreground = e0e0e0