advertising/billboard: add Meadow

https://meadowoutdoor.com/about/territories

Author: UsefulRabbit

data/operators/advertising/billboard.json

@@ -745,6 +745,26 @@
         "operator:wikidata": "Q38076"
       }
     },
+    {
+      "displayName": "Meadow",
+      "id": "meadow-5d4f5c",
+      "locationSet": {
+        "include": [
+          "us-ca.geojson",
+          "us-id.geojson",
+          "us-or.geojson",
+          "us-wa.geojson"
+        ]
+      },
+      "matchNames": [
+        "Meadow Outdoor Advertising"
+      ],
+      "tags": {
+        "advertising": "billboard",
+        "operator": "Meadow",
+        "operator:wikidata": "Q138747871"
+      }
+    },
     {
       "displayName": "Médialine",
       "id": "medialine-28ca1f",