feat(p2p): allow to run multiple clusters in the same p2p network (#3128)

feat(p2p): allow to run multiple clusters in the same network

Allow to specify a network ID via CLI which allows to run multiple
clusters, logically separated within the same network (by using the same
shared token).

Note: This segregation is not "secure" by any means, anyone having the
network token can see the services available in all the network,
however, this provides a way to separate the inference endpoints.

This allows for instance to have a node which is both federated and
having attached a set of llama.cpp workers.

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

core/config/application_config.go

@@ -34,6 +34,7 @@ type ApplicationConfig struct {
 	EnforcePredownloadScans             bool
 	OpaqueErrors                        bool
 	P2PToken                            string
+	P2PNetworkID                        string
 
 	ModelLibraryURL string
 
@@ -91,6 +92,12 @@ func WithCors(b bool) AppOption {
 	}
 }
 
+func WithP2PNetworkID(s string) AppOption {
+	return func(o *ApplicationConfig) {
+		o.P2PNetworkID = s
+	}
+}
+
 func WithCsrf(b bool) AppOption {
 	return func(o *ApplicationConfig) {
 		o.CSRF = b