Split runway preset: add runway_area.json for area geometry

Separates runway preset into line (runway.json) and area (runway_area.json)
variants, following the pedestrian preset pattern.

data/preset_categories/area.json

@@ -1,10 +1,10 @@
 {
-  "name": "Area",
-  "icon": "landuse",
-  "members": [
-    "building",
-    "landuse",
-    "natural",
-    "aeroway"
-  ]
+    "name": "Area",
+    "icon": "landuse",
+    "members": [
+        "building",
+        "landuse",
+        "natural",
+        "aeroway"
+    ]
 }

data/preset_defaults.json

@@ -9,7 +9,6 @@
         "amenity/place_of_worship",
         "amenity/cafe",
         "amenity/restaurant",
-        "aeroway/runway",
         "area"
     ],
     "line": [

data/presets/aeroway/runway.json

@@ -7,19 +7,11 @@
         "width"
     ],
     "geometry": [
-        "line",
-        "area"
+        "line"
     ],
     "tags": {
         "aeroway": "runway"
     },
-    "addTags": {
-        "aeroway": "runway"
-    },
-    "removeTags": {
-        "aeroway": "*",
-        "area:aeroway": "*"
-    },
     "terms": [
         "landing strip"
     ],

data/presets/aeroway/runway_area.json

@@ -0,0 +1,27 @@
+{
+    "icon": "fas-plane-departure",
+    "fields": [
+        "ref_runway",
+        "surface",
+        "length",
+        "width"
+    ],
+    "geometry": [
+        "area"
+    ],
+    "tags": {
+        "aeroway": "runway"
+    },
+    "addTags": {
+        "aeroway": "runway"
+    },
+    "removeTags": {
+        "aeroway": "*",
+        "area:aeroway": "*"
+    },
+    "terms": [
+        "landing strip"
+    ],
+    "name": "Runway (area)",
+    "searchable": false
+}