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/Hacktober

@@ -0,0 +1,22 @@
+palette = 0=#191918
+palette = 1=#b34538
+palette = 2=#587744
+palette = 3=#d08949
+palette = 4=#206ec5
+palette = 5=#864651
+palette = 6=#ac9166
+palette = 7=#f1eee7
+palette = 8=#464444
+palette = 9=#b33323
+palette = 10=#42824a
+palette = 11=#c75a22
+palette = 12=#5389c5
+palette = 13=#e795a5
+palette = 14=#ebc587
+palette = 15=#ffffff
+background = #141414
+foreground = #c9c9c9
+cursor-color = #c9c9c9
+cursor-text = #141414
+selection-background = #141414
+selection-foreground = #c9c9c9