add ghostty config and theme

configs/ghostty_g/themes/gruvbox-material

@@ -0,0 +1,21 @@
+palette = 0=#141617
+palette = 1=#ea6962
+palette = 2=#a9b665
+palette = 3=#d8a657
+palette = 4=#7daea3
+palette = 5=#d3869b
+palette = 6=#89b482
+palette = 7=#ddc7a1
+palette = 8=#141617
+palette = 9=#ea6962
+palette = 10=#a9b665
+palette = 11=#d8a657
+palette = 12=#7daea3
+palette = 13=#d3869b
+palette = 14=#89b482
+palette = 15=#ddc7a1
+background = 282828
+foreground = d4be98
+cursor-color = ffffff
+selection-background = 2b2c3f
+selection-foreground = 333e34