Added Expressway field to Trunk and Primary Road presets (#216)

data/fields/expressway.json

@@ -0,0 +1,8 @@
+{
+    "key": "expressway",
+    "type": "check",
+    "label": "Expressway",
+    "locationSet": {
+        "include": ["US"]
+    }
+}

data/presets/highway/primary.json

@@ -14,6 +14,7 @@
         "charge_toll",
         "covered",
         "cycleway",
+        "expressway",
         "flood_prone",
         "incline",
         "junction_line",

data/presets/highway/trunk.json

@@ -6,6 +6,7 @@
         "oneway",
         "maxspeed",
         "lanes",
+        "expressway",
         "surface",
         "structure",
         "access"
@@ -31,6 +32,8 @@
         "highway": "trunk"
     },
     "terms": [
+        "expressway",
+        "highway",
         "road",
         "street"
     ],