add ghostty config and theme

configs/ghostty_g/themes/Treehouse

@@ -0,0 +1,21 @@
+palette = 0=#321300
+palette = 1=#b2270e
+palette = 2=#44a900
+palette = 3=#aa820c
+palette = 4=#58859a
+palette = 5=#97363d
+palette = 6=#b25a1e
+palette = 7=#786b53
+palette = 8=#433626
+palette = 9=#ed5d20
+palette = 10=#55f238
+palette = 11=#f2b732
+palette = 12=#85cfed
+palette = 13=#e14c5a
+palette = 14=#f07d14
+palette = 15=#ffc800
+background = 191919
+foreground = 786b53
+cursor-color = fac814
+selection-background = 786b53
+selection-foreground = fac800