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/Night Owlish Light

@@ -0,0 +1,22 @@
+palette = 0=#011627
+palette = 1=#d3423e
+palette = 2=#2aa298
+palette = 3=#daaa01
+palette = 4=#4876d6
+palette = 5=#403f53
+palette = 6=#08916a
+palette = 7=#7a8181
+palette = 8=#7a8181
+palette = 9=#f76e6e
+palette = 10=#49d0c5
+palette = 11=#dac26b
+palette = 12=#5ca7e4
+palette = 13=#697098
+palette = 14=#00c990
+palette = 15=#989fb1
+background = #ffffff
+foreground = #403f53
+cursor-color = #403f53
+cursor-text = #fbfbfb
+selection-background = #f2f2f2
+selection-foreground = #403f53