add ghostty config and theme

configs/ghostty_g/themes/xcodewwdc

@@ -0,0 +1,21 @@
+palette = 0=#494d5c
+palette = 1=#bb383a
+palette = 2=#94c66e
+palette = 3=#d28e5d
+palette = 4=#8884c5
+palette = 5=#b73999
+palette = 6=#00aba4
+palette = 7=#e7e8eb
+palette = 8=#7f869e
+palette = 9=#bb383a
+palette = 10=#94c66e
+palette = 11=#d28e5d
+palette = 12=#8884c5
+palette = 13=#b73999
+palette = 14=#00aba4
+palette = 15=#e7e8eb
+background = 292c36
+foreground = e7e8eb
+cursor-color = e7e8eb
+selection-background = 494d5c
+selection-foreground = e7e8eb