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/Carbonfox

@@ -0,0 +1,22 @@
+palette = 0=#282828
+palette = 1=#ee5396
+palette = 2=#25be6a
+palette = 3=#08bdba
+palette = 4=#78a9ff
+palette = 5=#be95ff
+palette = 6=#33b1ff
+palette = 7=#dfdfe0
+palette = 8=#484848
+palette = 9=#f16da6
+palette = 10=#46c880
+palette = 11=#2dc7c4
+palette = 12=#8cb6ff
+palette = 13=#c8a5ff
+palette = 14=#52bdff
+palette = 15=#e4e4e5
+background = #161616
+foreground = #f2f4f8
+cursor-color = #f2f4f8
+cursor-text = #161616
+selection-background = #2a2a2a
+selection-foreground = #f2f4f8