multiplayer: added basic server and client functionality

server.gd

@@ -0,0 +1,27 @@
+extends Node3D
+
+@onready var menu = $UI/Menu
+
+const PORT = 9999
+const PLAYER = preload("res://player/player.tscn")
+var peer = ENetMultiplayerPeer.new()
+
+
+
+func _on_server_button_pressed() -> void:
+	menu.hide()
+	peer.create_server(PORT)
+	multiplayer.multiplayer_peer = peer
+	multiplayer.peer_connected.connect(add_player)
+	
+	add_player(multiplayer.get_unique_id())
+	
+func _on_client_button_pressed() -> void:
+	menu.hide()
+	peer.create_client("localhost",PORT)
+	multiplayer.multiplayer_peer = peer
+	
+func add_player(peer_id):
+	var player = PLAYER.instantiate()
+	player.name = str(peer_id)
+	add_child(player)