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/Sundried

@@ -0,0 +1,22 @@
+palette = 0=#302b2a
+palette = 1=#a7463d
+palette = 2=#587744
+palette = 3=#9d602a
+palette = 4=#485b98
+palette = 5=#864651
+palette = 6=#9c814f
+palette = 7=#c9c9c9
+palette = 8=#4d4e48
+palette = 9=#aa000c
+palette = 10=#128c21
+palette = 11=#fc6a21
+palette = 12=#7999f7
+palette = 13=#fd8aa1
+palette = 14=#fad484
+palette = 15=#ffffff
+background = #1a1818
+foreground = #c9c9c9
+cursor-color = #ffffff
+cursor-text = #191717
+selection-background = #302b2a
+selection-foreground = #c9c9c9