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/Catppuccin Latte

@@ -0,0 +1,22 @@
+palette = 0=#5c5f77
+palette = 1=#d20f39
+palette = 2=#40a02b
+palette = 3=#df8e1d
+palette = 4=#1e66f5
+palette = 5=#ea76cb
+palette = 6=#179299
+palette = 7=#acb0be
+palette = 8=#6c6f85
+palette = 9=#de293e
+palette = 10=#49af3d
+palette = 11=#eea02d
+palette = 12=#456eff
+palette = 13=#fe85d8
+palette = 14=#2d9fa8
+palette = 15=#bcc0cc
+background = #eff1f5
+foreground = #4c4f69
+cursor-color = #dc8a78
+cursor-text = #eff1f5
+selection-background = #acb0be
+selection-foreground = #4c4f69