Assign params as URL paramstring to tile layer URI

[dbauszus-glx]

The paramString util must return an empty string if provided with a falsy params argument.

The tile layer format should create a paramString to be appended to the layer.URI.

Params such as the api keys should be provided as params in the layer json. eg.

      "here_hybrid": {
        "name": "HERE Hybrid",
        "format": "tiles",
        "URI": "https://{1-4}.aerial.maps.ls.hereapi.com/maptile/2.1/maptile/newest/hybrid.day/{z}/{x}/{y}/256/png8?",
        "params": {
          "apiKey": "here"
        },
        "attribution": {
          "© Here": "https://www.here.com/",
          "© OpenStreetMap": "http://www.openstreetmap.org/copyright"
        }
      },

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[RobAndrewHurst]

@dbauszus-glx
This then isn't backwards compatible with previous here configuration?

[RobAndrewHurst]

Nice!

Looks all good to me!

[AlexanderGeere]

Works with the params or the key in the URI. Looks good to me