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/Material Design Colors

@@ -0,0 +1,22 @@
+palette = 0=#435b67
+palette = 1=#fc3841
+palette = 2=#5cf19e
+palette = 3=#fed032
+palette = 4=#37b6ff
+palette = 5=#fc226e
+palette = 6=#59ffd1
+palette = 7=#ffffff
+palette = 8=#a1b0b8
+palette = 9=#fc746d
+palette = 10=#adf7be
+palette = 11=#fee16c
+palette = 12=#70cfff
+palette = 13=#fc669b
+palette = 14=#9affe6
+palette = 15=#ffffff
+background = #1d262a
+foreground = #e7ebed
+cursor-color = #eaeaea
+cursor-text = #000000
+selection-background = #4e6a78
+selection-foreground = #e7ebed