Add support for COG layers in MetadataExplorer

[allyoucanmap]

We should add enable basic support of COG layers in MetadataExplorer

[allyoucanmap]

@dsuren1 please test this enhancement #2222 on development and report here the status, thanks

[dsuren1]

@allyoucanmap
I was able to add the COG layer from the Metadata Explorer using a supported projection. A test map with the COG layer has been added for testing.