Add fhrs:id field (#987)

Applicable presets copied from QA tool
5a1faabe5a/import/osm/imposm_mapping.yml (L17)

data/presets/tourism/chalet.json

@@ -17,6 +17,7 @@
         "building/levels_building",
         "height_building",
         "payment_multi",
+        "fhrs/id-GB",
         "reservation",
         "smoking"
     ],

data/presets/tourism/guest_house.json

@@ -17,6 +17,7 @@
         "{@templates/poi}",
         "air_conditioning",
         "building/levels_building",
+        "fhrs/id-GB",
         "height_building",
         "reservation",
         "smoking"

data/presets/tourism/hostel.json

@@ -4,6 +4,7 @@
         "{tourism/guest_house}"
     ],
     "moreFields": [
+        "fhrs/id-GB",
         "{tourism/guest_house}"
     ],
     "geometry": [

data/presets/tourism/hotel.json

@@ -6,6 +6,7 @@
     "moreFields": [
         "{tourism/motel}",
         "bar",
+        "fhrs/id-GB",
         "ref/FR/siret-FR",
         "stars"
     ],