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/0x96f

@@ -0,0 +1,22 @@
+palette = 0=#262427
+palette = 1=#ff666d
+palette = 2=#b3e03a
+palette = 3=#ffc739
+palette = 4=#00cde8
+palette = 5=#a392e8
+palette = 6=#9deaf6
+palette = 7=#fcfcfa
+palette = 8=#545452
+palette = 9=#ff7e83
+palette = 10=#bee55e
+palette = 11=#ffd05e
+palette = 12=#1bd5eb
+palette = 13=#b0a3eb
+palette = 14=#acedf8
+palette = 15=#fcfcfa
+background = #262427
+foreground = #fcfcfa
+cursor-color = #fcfcfa
+cursor-text = #000000
+selection-background = #fcfcfa
+selection-foreground = #262427