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/Everforest Light Med

@@ -0,0 +1,22 @@
+palette = 0=#7a8478
+palette = 1=#e67e80
+palette = 2=#9ab373
+palette = 3=#c1a266
+palette = 4=#7fbbb3
+palette = 5=#d699b6
+palette = 6=#83c092
+palette = 7=#b2af9f
+palette = 8=#a6b0a0
+palette = 9=#f85552
+palette = 10=#8da101
+palette = 11=#dfa000
+palette = 12=#3a94c5
+palette = 13=#df69ba
+palette = 14=#35a77c
+palette = 15=#fffbef
+background = #efebd4
+foreground = #5c6a72
+cursor-color = #f57d26
+cursor-text = #eaedc8
+selection-background = #eaedc8
+selection-foreground = #5c6a72