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/Neobones Dark

@@ -0,0 +1,22 @@
+palette = 0=#0f191f
+palette = 1=#de6e7c
+palette = 2=#90ff6b
+palette = 3=#b77e64
+palette = 4=#8190d4
+palette = 5=#b279a7
+palette = 6=#66a5ad
+palette = 7=#c6d5cf
+palette = 8=#334652
+palette = 9=#e8838f
+palette = 10=#a0ff85
+palette = 11=#d68c67
+palette = 12=#92a0e2
+palette = 13=#cf86c1
+palette = 14=#65b8c1
+palette = 15=#98a39e
+background = #0f191f
+foreground = #c6d5cf
+cursor-color = #ceddd7
+cursor-text = #0f191f
+selection-background = #3a3e3d
+selection-foreground = #c6d5cf