Support resto / snapplanet

[cholmes]

Trying to add https://tamn.snapplanet.io/ lets you add it to the list of api's, but then on search it says 'method not supported'. It is a latest beta.1 API and rc.3/rc.4 STAC implementation.

It's backed by https://github.com/jjrom/resto

[volaya]

Looks like the endpoint only supports GET requests, but not POST requests. That does not follow what is described in the STAC API docs (https://stacspec.org/STAC-api.html#operation/postSearchSTAC), where it's stated that the POST endpoint is mandatory.

The issue tracker in the resto repo confirms that there is no support for POST

jjrom/resto#275

So i guess this issue can be closed, since the problem is not in the plugin