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/Harper

@@ -0,0 +1,22 @@
+palette = 0=#010101
+palette = 1=#f8b63f
+palette = 2=#7fb5e1
+palette = 3=#d6da25
+palette = 4=#489e48
+palette = 5=#b296c6
+palette = 6=#f5bfd7
+palette = 7=#a8a49d
+palette = 8=#726e6a
+palette = 9=#f8b63f
+palette = 10=#7fb5e1
+palette = 11=#d6da25
+palette = 12=#489e48
+palette = 13=#b296c6
+palette = 14=#f5bfd7
+palette = 15=#fefbea
+background = #010101
+foreground = #a8a49d
+cursor-color = #a8a49d
+cursor-text = #010101
+selection-background = #5a5753
+selection-foreground = #a8a49d