WB.15 Alignment and Parcels coordinates

1. Allow users to enter Northings and Eastings for parcel and alignment vertices.
2. Allow users to snap to objects when creating or editing alignments and parcels.
A pick button in the properties dialog for the N,E would be great. Users can snap to an existing element and the NE for the vertex will be updated.

**Built:** Built in /lab 2026-11-06 (civil-snap-09). Alignment PIs already took a typed E / N; now pad, parcel and feature-line corners list typed E and N too, and every one has a Pick button: press it, click a place in the plan (snapped to survey points, PIs, corners and vertices; Alt = free), and the vertex takes that easting and northing, one undo step. Drawing and dragging alignments and parcels snaps the same way.