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/Kitty Default

@@ -0,0 +1,22 @@
+palette = 0=#000000
+palette = 1=#cc0403
+palette = 2=#19cb00
+palette = 3=#cecb00
+palette = 4=#0d73cc
+palette = 5=#cb1ed1
+palette = 6=#0dcdcd
+palette = 7=#dddddd
+palette = 8=#767676
+palette = 9=#f2201f
+palette = 10=#23fd00
+palette = 11=#fffd00
+palette = 12=#1a8fff
+palette = 13=#fd28ff
+palette = 14=#14ffff
+palette = 15=#ffffff
+background = #000000
+foreground = #dddddd
+cursor-color = #cccccc
+cursor-text = #111111
+selection-background = #fffacd
+selection-foreground = #000000