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/Tearout

@@ -0,0 +1,22 @@
+palette = 0=#685742
+palette = 1=#cc967b
+palette = 2=#97976d
+palette = 3=#6c9861
+palette = 4=#b5955e
+palette = 5=#c9a554
+palette = 6=#d7c483
+palette = 7=#b5955e
+palette = 8=#75644f
+palette = 9=#cc967b
+palette = 10=#97976d
+palette = 11=#6c9861
+palette = 12=#b5955e
+palette = 13=#c9a554
+palette = 14=#d7c483
+palette = 15=#b5955e
+background = #34392d
+foreground = #f4d2ae
+cursor-color = #d7c483
+cursor-text = #141415
+selection-background = #e4c47a
+selection-foreground = #000000