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/Django Smooth

@@ -0,0 +1,22 @@
+palette = 0=#000000
+palette = 1=#fd6209
+palette = 2=#41a83e
+palette = 3=#ffe862
+palette = 4=#989898
+palette = 5=#f8f8f8
+palette = 6=#9df39f
+palette = 7=#e8e8e7
+palette = 8=#727272
+palette = 9=#ff943b
+palette = 10=#73da70
+palette = 11=#ffff94
+palette = 12=#cacaca
+palette = 13=#ffffff
+palette = 14=#cfffd1
+palette = 15=#ffffff
+background = #245032
+foreground = #f8f8f8
+cursor-color = #4c7e5c
+cursor-text = #f8f8f8
+selection-background = #336442
+selection-foreground = #f8f8f8