add ghostty config and theme

configs/ghostty_g/themes/Medallion

@@ -0,0 +1,21 @@
+palette = 0=#000000
+palette = 1=#b64c00
+palette = 2=#7c8b16
+palette = 3=#d3bd26
+palette = 4=#616bb0
+palette = 5=#8c5a90
+palette = 6=#916c25
+palette = 7=#cac29a
+palette = 8=#5e5219
+palette = 9=#ff9149
+palette = 10=#b2ca3b
+palette = 11=#ffe54a
+palette = 12=#acb8ff
+palette = 13=#ffa0ff
+palette = 14=#ffbc51
+palette = 15=#fed698
+background = 1d1908
+foreground = cac296
+cursor-color = d3ba30
+selection-background = 626dac
+selection-foreground = cac29a