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/Jellybeans

@@ -0,0 +1,22 @@
+palette = 0=#929292
+palette = 1=#e27373
+palette = 2=#94b979
+palette = 3=#ffba7b
+palette = 4=#97bedc
+palette = 5=#e1c0fa
+palette = 6=#00988e
+palette = 7=#dedede
+palette = 8=#bdbdbd
+palette = 9=#ffa1a1
+palette = 10=#bddeab
+palette = 11=#ffdca0
+palette = 12=#b1d8f6
+palette = 13=#fbdaff
+palette = 14=#1ab2a8
+palette = 15=#ffffff
+background = #121212
+foreground = #dedede
+cursor-color = #ffa560
+cursor-text = #ffffff
+selection-background = #474e91
+selection-foreground = #f4f4f4