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/The Hulk

@@ -0,0 +1,22 @@
+palette = 0=#1b1d1e
+palette = 1=#269d1b
+palette = 2=#13ce30
+palette = 3=#63e457
+palette = 4=#2525f5
+palette = 5=#712c81
+palette = 6=#378ca9
+palette = 7=#d9d8d1
+palette = 8=#505354
+palette = 9=#8dff2a
+palette = 10=#48ff77
+palette = 11=#3afe16
+palette = 12=#506b95
+palette = 13=#72589d
+palette = 14=#4085a6
+palette = 15=#e5e6e1
+background = #1b1d1e
+foreground = #b5b5b5
+cursor-color = #16b61b
+cursor-text = #000000
+selection-background = #4d504c
+selection-foreground = #31892f