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/TokyoNight Storm

@@ -0,0 +1,22 @@
+palette = 0=#1d202f
+palette = 1=#f7768e
+palette = 2=#9ece6a
+palette = 3=#e0af68
+palette = 4=#7aa2f7
+palette = 5=#bb9af7
+palette = 6=#7dcfff
+palette = 7=#a9b1d6
+palette = 8=#4e5575
+palette = 9=#f7768e
+palette = 10=#9ece6a
+palette = 11=#e0af68
+palette = 12=#7aa2f7
+palette = 13=#bb9af7
+palette = 14=#7dcfff
+palette = 15=#c0caf5
+background = #24283b
+foreground = #c0caf5
+cursor-color = #c0caf5
+cursor-text = #1d202f
+selection-background = #364a82
+selection-foreground = #c0caf5