add ghostty config and theme

configs/ghostty_g/themes/Calamity

@@ -0,0 +1,21 @@
+palette = 0=#2f2833
+palette = 1=#fc644d
+palette = 2=#a5f69c
+palette = 3=#e9d7a5
+palette = 4=#3b79c7
+palette = 5=#f92672
+palette = 6=#74d3de
+palette = 7=#d5ced9
+palette = 8=#7e6c88
+palette = 9=#fc644d
+palette = 10=#a5f69c
+palette = 11=#e9d7a5
+palette = 12=#3b79c7
+palette = 13=#f92672
+palette = 14=#74d3de
+palette = 15=#ffffff
+background = 2f2833
+foreground = d5ced9
+cursor-color = d5ced9
+selection-background = 7e6c88
+selection-foreground = d5ced9