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/Lovelace

@@ -0,0 +1,22 @@
+palette = 0=#282a36
+palette = 1=#f37f97
+palette = 2=#5adecd
+palette = 3=#f2a272
+palette = 4=#8897f4
+palette = 5=#c574dd
+palette = 6=#79e6f3
+palette = 7=#fdfdfd
+palette = 8=#4e5165
+palette = 9=#ff4971
+palette = 10=#18e3c8
+palette = 11=#ff8037
+palette = 12=#556fff
+palette = 13=#b043d1
+palette = 14=#3fdcee
+palette = 15=#bebec1
+background = #1d1f28
+foreground = #fdfdfd
+cursor-color = #c574dd
+cursor-text = #ffffff
+selection-background = #c1deff
+selection-foreground = #000000