refact(action): Make ActionSet behave as a set instead of a list

This switches the implementation of an ActionSet from a slice to a map
to ensure the elements in an ActionSet are unique. This allows for other
packages to perform set operations such as a union or difference without
needing to account for duplicates.

internal/daemon/controller/common/scopeids/scope_ids.go

@@ -153,7 +153,7 @@ func GetListingResourceInformation(
 		aSet := input.AuthResults.FetchActionSetForType(ctx,
 			// This is overridden by WithResource
 			resource.Unknown,
-			action.ActionSet{action.List},
+			action.NewActionSet(action.List),
 			auth.WithResource(&res),
 		)
 		switch len(aSet) {
@@ -163,7 +163,7 @@ func GetListingResourceInformation(
 			// lookup might fail.
 			deferredScopes = append(deferredScopes, scp)
 		case 1:
-			if aSet[0] != action.List {
+			if !aSet.HasAction(action.List) {
 				return nil, errors.New(ctx, errors.Internal, op, "unexpected action in set")
 			}
 			if output.ScopeResourceMap[scpId] == nil {