feat(resources): bundle color themes and compiled xterm-ghostty terminfo

Makes the resources directory self-contained like Ghostty's share/ghostty:
- themes/: the 463 iTerm2-Color-Schemes themes Ghostty 1.3.1 ships
  (release 20260216-151611-fc73ce3), with the upstream MIT license.
- terminfo/: xterm-ghostty compiled with `tic -x` from the terminfo
  source generated by ghostty-termio; `infocmp -x` is identical to the
  installed Ghostty's entry.

The generator script and resources-dir discovery changes follow in a
separate commit.

Test Plan:
- TERMINFO=resources/terminfo infocmp -x xterm-ghostty

resources/themes/Crayon Pony Fish

@@ -0,0 +1,22 @@
+palette = 0=#2b1b1d
+palette = 1=#91002b
+palette = 2=#579524
+palette = 3=#ab311b
+palette = 4=#8c87b0
+palette = 5=#692f50
+palette = 6=#e8a866
+palette = 7=#68525a
+palette = 8=#4a383b
+palette = 9=#c5255d
+palette = 10=#8dff57
+palette = 11=#c8381d
+palette = 12=#cfc9ff
+palette = 13=#fc6cba
+palette = 14=#ffceaf
+palette = 15=#b0949d
+background = #150707
+foreground = #68525a
+cursor-color = #68525a
+cursor-text = #140707
+selection-background = #2b1b1d
+selection-foreground = #69525a