Add support for Json output format to WMS GetFeatureInfo

[tfr42]

deegree WMS GetFeatureInfo operation shall support for Json/GeoJson as output format.

[lgoltz]

Any ideas how to enable GeoJSON as output format? GeoJSON does not require a File, XSLTFile and Serializer [1]. Simple proposal:

<FeatureInfoFormats>
  <GetFeatureInfoFormat>
    <GeoJson>true</GeoJson>
    <Format>application/geo+json</Format>
  </GetFeatureInfoFormat>
</FeatureInfoFormats>

[1] https://schemas.deegree.org/services/wms/3.4.0/wms_configuration.xsd

[copierrj]

Looks great!

A few suggestions:

• perhaps better to use an empty element because it is only identifying the type of output and setting it to false doesn't seem to make sense.
• would it be a good idea to be able to configure the output coordinate system?

[stephanr]

I think it might also make sense to align the configuration with the WFS configuration, as i think deegree supports also outputting geomtries as well, with a vendor-specific parameter.

deegree3/deegree-services/deegree-services-wfs/src/main/resources/META-INF/schemas/services/wfs/wfs_configuration.xsd

Line 173 in 1fbb503

<attribute name="allowOtherCrsThanWGS84" type="boolean" default="false"/>