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/Chester

@@ -0,0 +1,22 @@
+palette = 0=#080200
+palette = 1=#fa5e5b
+palette = 2=#16c98d
+palette = 3=#ffc83f
+palette = 4=#288ad6
+palette = 5=#d34590
+palette = 6=#28ddde
+palette = 7=#e7e7e7
+palette = 8=#6f6b68
+palette = 9=#fa5e5b
+palette = 10=#16c98d
+palette = 11=#feef6d
+palette = 12=#278ad6
+palette = 13=#d34590
+palette = 14=#27dede
+palette = 15=#ffffff
+background = #2c3643
+foreground = #ffffff
+cursor-color = #b4b1b1
+cursor-text = #000000
+selection-background = #67747c
+selection-foreground = #ffffff