Support filter tree by geo polygon

[dadiorchen]

As defined here:

treetracker-query-api/docs/api/spec/query-api.yaml

Lines 96 to 100 in 192a72e

	- schema:
	type: string
	in: query
	name: area
	description: Filter by geojson area

we need a parameter in the GET /trees api that we can filter data by geojson, something like this:

{
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "geometry": {
        "type": "Polygon", // or "MultiPolygon"
        "coordinates": [
          [
            [longitude1, latitude1],
            [longitude2, latitude2],
            [longitude3, latitude3],
            [longitude1, latitude1] // Closing the polygon
          ]
        ]
      },
      "properties": {
        "name": "Area Name",
        "description": "Description of the area"
      }
    }
  ]
}

---

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[dadiorchen]

https://map.treetracker.org/trees/7424275 I found it