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/Farmhouse Light

@@ -0,0 +1,22 @@
+palette = 0=#1d2027
+palette = 1=#8d0003
+palette = 2=#3a7d00
+palette = 3=#a95600
+palette = 4=#092ccd
+palette = 5=#820046
+palette = 6=#229256
+palette = 7=#a8a4a1
+palette = 8=#394047
+palette = 9=#eb0009
+palette = 10=#7ac100
+palette = 11=#ea9a00
+palette = 12=#006efe
+palette = 13=#bf3b7f
+palette = 14=#00c649
+palette = 15=#f4eef0
+background = #e8e4e1
+foreground = #1d2027
+cursor-color = #006efe
+cursor-text = #1d2027
+selection-background = #b3b1aa
+selection-foreground = #4d5658