Adding field location to existing solar panel preset (#1808)

Co-authored-by: Martin Raifer <martin@raifer.tech>

Author: git-tgo

data/presets/power/generator/method/photovoltaic.json

@@ -6,7 +6,8 @@
         "generator/output/electricity"
     ],
     "moreFields": [
-        "{power/generator}"
+        "{power/generator}",
+        "location"
     ],
     "geometry": [
         "area",