add ghostty config and theme

configs/ghostty_g/themes/Glacier

@@ -0,0 +1,21 @@
+palette = 0=#2e343c
+palette = 1=#bd0f2f
+palette = 2=#35a770
+palette = 3=#fb9435
+palette = 4=#1f5872
+palette = 5=#bd2523
+palette = 6=#778397
+palette = 7=#ffffff
+palette = 8=#404a55
+palette = 9=#bd0f2f
+palette = 10=#49e998
+palette = 11=#fddf6e
+palette = 12=#2a8bc1
+palette = 13=#ea4727
+palette = 14=#a0b6d3
+palette = 15=#ffffff
+background = 0c1115
+foreground = ffffff
+cursor-color = 6c6c6c
+selection-background = bd2523
+selection-foreground = ffffff