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/Rose Pine

@@ -0,0 +1,22 @@
+palette = 0=#26233a
+palette = 1=#eb6f92
+palette = 2=#31748f
+palette = 3=#f6c177
+palette = 4=#9ccfd8
+palette = 5=#c4a7e7
+palette = 6=#ebbcba
+palette = 7=#e0def4
+palette = 8=#6e6a86
+palette = 9=#eb6f92
+palette = 10=#31748f
+palette = 11=#f6c177
+palette = 12=#9ccfd8
+palette = 13=#c4a7e7
+palette = 14=#ebbcba
+palette = 15=#e0def4
+background = #191724
+foreground = #e0def4
+cursor-color = #e0def4
+cursor-text = #191724
+selection-background = #403d52
+selection-foreground = #e0def4