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 Moon

@@ -0,0 +1,22 @@
+palette = 0=#1b1d2b
+palette = 1=#ff757f
+palette = 2=#c3e88d
+palette = 3=#ffc777
+palette = 4=#82aaff
+palette = 5=#c099ff
+palette = 6=#86e1fc
+palette = 7=#828bb8
+palette = 8=#444a73
+palette = 9=#ff757f
+palette = 10=#c3e88d
+palette = 11=#ffc777
+palette = 12=#82aaff
+palette = 13=#c099ff
+palette = 14=#86e1fc
+palette = 15=#c8d3f5
+background = #222436
+foreground = #c8d3f5
+cursor-color = #c8d3f5
+cursor-text = #222436
+selection-background = #2d3f76
+selection-foreground = #c8d3f5