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 Macchiato

@@ -0,0 +1,22 @@
+palette = 0=#494d64
+palette = 1=#ed8796
+palette = 2=#a6da95
+palette = 3=#eed49f
+palette = 4=#8aadf4
+palette = 5=#f5bde6
+palette = 6=#8bd5ca
+palette = 7=#a5adcb
+palette = 8=#5b6078
+palette = 9=#ec7486
+palette = 10=#8ccf7f
+palette = 11=#e1c682
+palette = 12=#78a1f6
+palette = 13=#f2a9dd
+palette = 14=#63cbc0
+palette = 15=#b8c0e0
+background = #24273a
+foreground = #cad3f5
+cursor-color = #f4dbd6
+cursor-text = #24273a
+selection-background = #5b6078
+selection-foreground = #cad3f5