add ghostty config and theme

configs/ghostty_g/themes/Ayu Mirage

@@ -0,0 +1,21 @@
+palette = 0=#191e2a
+palette = 1=#ed8274
+palette = 2=#a6cc70
+palette = 3=#fad07b
+palette = 4=#6dcbfa
+palette = 5=#cfbafa
+palette = 6=#90e1c6
+palette = 7=#c7c7c7
+palette = 8=#686868
+palette = 9=#f28779
+palette = 10=#bae67e
+palette = 11=#ffd580
+palette = 12=#73d0ff
+palette = 13=#d4bfff
+palette = 14=#95e6cb
+palette = 15=#ffffff
+background = 1f2430
+foreground = cbccc6
+cursor-color = ffcc66
+selection-background = 33415e
+selection-foreground = cbccc6