A tool window for the rectangular sketch pattern (#799)

sketch.pattern.rectangular gets a tool window with both quantities and spacings and an optional direction, instead of a click flow with a fixed count.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

crates/ui-egui/src/locales/ko.json

@@ -247,6 +247,8 @@
   "ui.profile_plane": "프로파일 평면",
   "ui.profiles": "프로파일",
   "ui.project": "투영",
+  "ui.quantity": "수량",
+  "ui.quantity_2": "수량 2",
   "ui.quit": "종료",
   "ui.radius": "반지름",
   "ui.radius_type": "반지름 유형",
@@ -286,6 +288,8 @@
   "ui.slot": "슬롯",
   "ui.smooth": "부드럽게",
   "ui.snap": "스냅",
+  "ui.spacing": "간각",
+  "ui.spacing_2": "간각 2",
   "ui.sphere": "구",
   "ui.spline": "스플라인",
   "ui.split_body": "바디 분할",