Support Layman v2
Feature Request
Is your feature request related to a problem? Please describe. Layman version 2.0.0 is being shipped with some breaking changes: https://github.com/LayerManager/layman/blob/ff665f62be72992275d184cc9f71766e73dfeb34/CHANGELOG.md#v200 Notably, the URLs for WMS and WFS requests have changed from workspace-specific URLs to generic "layman_wms" and alike. We must adapt our code to that and any other possible changes.
Describe the solution you'd like Change the code.
Describe alternatives you've considered
Worth discussion is a backwards compatibility. Layman provides a version number inside a response to the /rest/about/version request. We can distinguish based on that if needed (and I think that for some time, it will be needed).
Additional context Layman v2 can be tested against watlas.lesprojekt.cz
First I intend to test and merge #5622 before we start any work on this issue.
Layman 2.0.0 release is out https://github.com/LayerManager/layman/releases/tag/v2.0.0
#5713