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/No Clown Fiesta Light

@@ -0,0 +1,22 @@
+palette = 0=#d6d6d6
+palette = 1=#874e42
+palette = 2=#677940
+palette = 3=#b89058
+palette = 4=#8ba1bf
+palette = 5=#aa759f
+palette = 6=#3e5f66
+palette = 7=#151515
+palette = 8=#2b2b2b
+palette = 9=#637786
+palette = 10=#677940
+palette = 11=#b89058
+palette = 12=#93a2ab
+palette = 13=#aa759f
+palette = 14=#99ab93
+palette = 15=#373737
+background = #e1e1e1
+foreground = #151515
+cursor-color = #151515
+cursor-text = #d0d0d0
+selection-background = #c6d5de
+selection-foreground = #151515