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/Flexoki Dark

@@ -0,0 +1,22 @@
+palette = 0=#100f0f
+palette = 1=#d14d41
+palette = 2=#879a39
+palette = 3=#d0a215
+palette = 4=#4385be
+palette = 5=#ce5d97
+palette = 6=#3aa99f
+palette = 7=#878580
+palette = 8=#575653
+palette = 9=#af3029
+palette = 10=#66800b
+palette = 11=#ad8301
+palette = 12=#205ea6
+palette = 13=#a02f6f
+palette = 14=#24837b
+palette = 15=#cecdc3
+background = #100f0f
+foreground = #cecdc3
+cursor-color = #cecdc3
+cursor-text = #100f0f
+selection-background = #403e3c
+selection-foreground = #cecdc3