feat(array): ARRAYEDIT Source edits what an associative array repeats

ARRAYEDIT picks an associative array (or takes the preselected one) and
its Source option opens the objects every item repeats in the Block
Editor; saving there updates all items at once. Counts and spacings stay
in Properties.

Refs #1109

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/modules/draw/modify/mod.rs

@@ -1,5 +1,6 @@
 pub mod align;
 pub mod array;
+pub mod arrayedit;
 pub mod attedit;
 pub mod blend;
 pub mod block_edit;