Add support for the `editor` role #1905

Job	Run time
integration-test conda-store-server	6m 9s
Build docker images (conda-store)	16s
unit-test conda-store-server (ubuntu)	6m 30s
integration-test conda-store (3.8)	4m 37s
unit-test conda-store-server (macos)	14m 53s
Build docker images (conda-store-server)	41s
unit-test conda-store-server (windows)	20m 32s
integration-test conda-store (3.9)	4m 15s
integration-test conda-store (3.10)	4m 20s
	1h 2m 13s

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