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/Japanesque

@@ -0,0 +1,22 @@
+palette = 0=#343935
+palette = 1=#cf3f61
+palette = 2=#7bb75b
+palette = 3=#e9b32a
+palette = 4=#4c9ad4
+palette = 5=#a57fc4
+palette = 6=#389aad
+palette = 7=#fafaf6
+palette = 8=#595b59
+palette = 9=#d18fa6
+palette = 10=#767f2c
+palette = 11=#78592f
+palette = 12=#135979
+palette = 13=#604291
+palette = 14=#76bbca
+palette = 15=#b2b5ae
+background = #1e1e1e
+foreground = #f7f6ec
+cursor-color = #edcf4f
+cursor-text = #343935
+selection-background = #175877
+selection-foreground = #f7f6ec