Replace reverse geolocation server

[markuman]

Currently gpxpod is using nominatim.openstreetmap.org for geolocation search

• gpxpod/lib/Controller/MapController.php

  Lines 226 to 244 in a7ece45

  	public function nominatimSearch(
  	string $q, string $rformat = 'json', ?int $polygon_geojson = null, ?int $addressdetails = null,
  	?int $namedetails = null, ?int $extratags = null, int $limit = 10,
  	): DataResponse {
  	$extraParams = [
  	'polygon_geojson' => $polygon_geojson,
  	'addressdetails' => $addressdetails,
  	'namedetails' => $namedetails,
  	'extratags' => $extratags,
  	];
  	$searchResults = $this->mapService->searchLocation($this->userId, $q, $rformat, $extraParams, 0, $limit);
  	if (isset($searchResults['error'])) {
  	return new DataResponse('', Http::STATUS_BAD_REQUEST);
  	}
  	$response = new DataResponse($searchResults);
  	$response->cacheFor(60 * 60 * 24, false, true);
  	return $response;
  	}
  	}

• https://github.com/julien-nc/gpxpod/blob/main/lib/Service/MapService.php#L338

It would be nice if it is possible to provide another reverse geolocation server. Such as https://github.com/rtuszik/photon-docker

[julien-nc]

It's now possible to set a Photon API URL in GpxPod's admin settings. If this setting is empty, GpxPod keeps using https://nominatim.openstreetmap.org/search.
Too bad Photon does not return the same data structure as Nominatim. I had to make a few Photon-specific adjustments:

• Different request params are accepted
• There is no display_name in the results, it is now computed from the name, street, city, postcode, county, state, country attributes

The search is so much less rigid in Photon than with Nominatim. Very nice.

This will be included in the next release (NC => 33).