Tile duplicate housenumber filtering (#1391)

This PR introduces simple filtering of duplicate housenumbers.

Simple means that filtering is done withing the tile.
Duplicates are defined as same housenumber, street, block_number[1].

Duplicates are usually caused by POIs. People like to add addresses to them. Most POIs have names so to prioritize addresses we pick features without names first.

Formula is: `row_number() OVER(PARTITION BY concat(street, block_number, housenumber) ORDER BY has_name ASC) == 1`

layers/housenumber/mapping.yaml

@@ -12,6 +12,15 @@ tables:
     - name: housenumber
       key: addr:housenumber
       type: string
+    - name: street
+      key: addr:street
+      type: string
+    - name: block_number
+      key: addr:block_number
+      type: string
+    - name: has_name
+      key: name
+      type: string
     type_mappings:
       points:
         addr:housenumber: