add ghostty config and theme

configs/ghostty_g/themes/SpaceGray Eighties

@@ -0,0 +1,21 @@
+palette = 0=#15171c
+palette = 1=#ec5f67
+palette = 2=#81a764
+palette = 3=#fec254
+palette = 4=#5486c0
+palette = 5=#bf83c1
+palette = 6=#57c2c1
+palette = 7=#efece7
+palette = 8=#555555
+palette = 9=#ff6973
+palette = 10=#93d493
+palette = 11=#ffd256
+palette = 12=#4d84d1
+palette = 13=#ff55ff
+palette = 14=#83e9e4
+palette = 15=#ffffff
+background = 222222
+foreground = bdbaae
+cursor-color = bbbbbb
+selection-background = 272e35
+selection-foreground = ffffff