[management] network map from nmap data type (#6919)

Signed-off-by: Dmitri Dolguikh <dmitri.external@netbird.io>
Co-authored-by: Dmitri Dolguikh <dmitri.external@netbird.io>

shared/management/networkmap/nmdata/group.go

@@ -0,0 +1,30 @@
+package nmdata
+
+import "slices"
+
+// GroupAllName is the reserved name of the default group that contains every
+// peer in an account.
+const GroupAllName = "All"
+
+// Group is the slim twin of types.Group.
+type Group struct {
+	ID        string
+	Name      string
+	PublicID  string
+	Peers     []string
+	Resources []Resource
+}
+
+func (g *Group) IsGroupAll() bool {
+	return g.Name == GroupAllName
+}
+
+func (g *Group) Copy() *Group {
+	return &Group{
+		ID:        g.ID,
+		Name:      g.Name,
+		PublicID:  g.PublicID,
+		Peers:     slices.Clone(g.Peers),
+		Resources: slices.Clone(g.Resources),
+	}
+}