feat: Add assignment component with drag and drop to Set node (#8283)

Co-authored-by: Giulio Andreini <andreini@netseven.it>

packages/editor-ui/src/Interface.ts

@@ -1235,8 +1235,8 @@ export interface NDVState {
 		isDragging: boolean;
 		type: string;
 		data: string;
-		activeTargetId: string | null;
-		stickyPosition: null | XYPosition;
+		dimensions: DOMRect | null;
+		activeTarget: { id: string; stickyPosition: null | XYPosition } | null;
 	};
 	isMappingOnboarded: boolean;
 }