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/Wryan

@@ -0,0 +1,22 @@
+palette = 0=#333333
+palette = 1=#8c4665
+palette = 2=#287373
+palette = 3=#7c7c99
+palette = 4=#395573
+palette = 5=#5e468c
+palette = 6=#31658c
+palette = 7=#899ca1
+palette = 8=#3d3d3d
+palette = 9=#bf4d80
+palette = 10=#53a6a6
+palette = 11=#9e9ecb
+palette = 12=#477ab3
+palette = 13=#7e62b3
+palette = 14=#6096bf
+palette = 15=#c0c0c0
+background = #101010
+foreground = #999993
+cursor-color = #9e9ecb
+cursor-text = #000000
+selection-background = #4d4d4d
+selection-foreground = #ffffff