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/Andromeda

@@ -0,0 +1,22 @@
+palette = 0=#000000
+palette = 1=#cd3131
+palette = 2=#05bc79
+palette = 3=#e5e512
+palette = 4=#2472c8
+palette = 5=#bc3fbc
+palette = 6=#0fa8cd
+palette = 7=#e5e5e5
+palette = 8=#666666
+palette = 9=#cd3131
+palette = 10=#05bc79
+palette = 11=#e5e512
+palette = 12=#2472c8
+palette = 13=#bc3fbc
+palette = 14=#0fa8cd
+palette = 15=#e5e5e5
+background = #262a33
+foreground = #e5e5e5
+cursor-color = #f8f8f0
+cursor-text = #b5b5a8
+selection-background = #5a5c62
+selection-foreground = #ece7e7