Issue #2916780 by amateescu, timmillwood, alexpott: Rename to "workspaces"

core/composer.json

core/modules/content_moderation/content_moderation.install

...stem/tests/src/Functional/Module/InstallUninstallTest.php

...l/core.entity_form_display.workspace.workspace.deploy.yml

...config/install/core.entity_form_mode.workspace.deploy.yml

core/modules/workspaces/css/workspaces.overview.css

core/modules/workspaces/css/workspaces.toolbar.css

core/modules/workspaces/icons/000000/workspaces.svg

core/modules/workspaces/icons/81c071/ws_icon.svg

core/modules/workspaces/icons/f0a100/ws_icon.svg

core/modules/workspaces/src/Entity/Workspace.php

core/modules/workspaces/src/Entity/WorkspaceAssociation.php

core/modules/workspaces/src/EntityAccess.php

core/modules/workspaces/src/EntityOperations.php

.../modules/workspaces/src/EntityQuery/PgsqlQueryFactory.php

core/modules/workspaces/src/EntityQuery/Query.php

core/modules/workspaces/src/EntityQuery/QueryAggregate.php

core/modules/workspaces/src/EntityQuery/QueryFactory.php

core/modules/workspaces/src/EntityQuery/QueryTrait.php

core/modules/workspaces/src/EntityQuery/Tables.php