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/Galizur

@@ -0,0 +1,22 @@
+palette = 0=#223344
+palette = 1=#aa1122
+palette = 2=#33aa11
+palette = 3=#ccaa22
+palette = 4=#2255cc
+palette = 5=#7755aa
+palette = 6=#22bbdd
+palette = 7=#8899aa
+palette = 8=#556677
+palette = 9=#ff1133
+palette = 10=#33ff11
+palette = 11=#ffdd33
+palette = 12=#3377ff
+palette = 13=#aa77ff
+palette = 14=#33ddff
+palette = 15=#bbccdd
+background = #071317
+foreground = #ddeeff
+cursor-color = #ddeeff
+cursor-text = #071317
+selection-background = #071317
+selection-foreground = #ddeeff