feat: upstream enterprise preview (#1841)

feat: upstream enterprise preview

---------

Signed-off-by: Oliver Baehler <oliver@sudo-i.net>
Co-authored-by: CorentinPtrl <pitrel.corentin@gmail.com>

pkg/users/groups.go

@@ -0,0 +1,23 @@
+// Copyright 2020-2026 Project Capsule Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package users
+
+func HasIgnoredGroup(userGroups []string, ignoredGroups []string) bool {
+	if len(userGroups) == 0 || len(ignoredGroups) == 0 {
+		return false
+	}
+
+	ignored := make(map[string]struct{}, len(ignoredGroups))
+	for _, group := range ignoredGroups {
+		ignored[group] = struct{}{}
+	}
+
+	for _, group := range userGroups {
+		if _, ok := ignored[group]; ok {
+			return true
+		}
+	}
+
+	return false
+}