[FEATURE] Support WMS source

[JinIgarashi]

Feature Description

It would be nice to have support for WMS source from third party.

For example,

https://api.planet.com/basemaps/v1/mosaics/wmts?api_key={API_KEY}

Feature Implementation

No response

Feature Alternatives

No response

Feature Impact

No response

Feature Rationale

No response

Feature Considerations

No response

Feature Requirements

No response

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