Put bungalow also to commercial buildings

Make things less confusing when marking bungalows which are commercial buildings (rentable buildings, either standalone or in a larger tourist complex).
I was able to find them but mostly because I remembered that they were definitely somewhere and started checking all categories.
Random user may be more likely to give up or be confused.
(admittedly there is also risk of users being confused and thinking there is difference between bungalow entry in residential category and one now in commercial category)

Author: matkoniecz

app/src/main/java/de/westnordost/streetcomplete/osm/building/BuildingTypeCategory.kt

@@ -11,6 +11,7 @@ enum class BuildingTypeCategory(val type: BuildingType?, val subTypes: List<Buil
     COMMERCIAL(
         BuildingType.COMMERCIAL, listOf(
         OFFICE, RETAIL, KIOSK, INDUSTRIAL, WAREHOUSE, HOTEL, STORAGE_TANK, PARKING, HANGAR,
+        BUNGALOW,
     )),
     CIVIC(
         BuildingType.CIVIC, listOf(