client: added card shuffling function for host

cards/card_manager.gd

@@ -1,3 +1,23 @@
 extends Node
 
 @export var full_deck: Dictionary[int, Card]
+
+func get_shuffled_cards(player_count: int, cards_to_pick: int) -> Dictionary: # Dictionary[String, Array[int]]
+	var dict: Dictionary = {}
+	var deck: Array[int] = full_deck.keys()
+	deck.shuffle()
+	var card_index = 0
+	for i in player_count:
+		var player_deck: Array[int] = []
+		for j in cards_to_pick:
+			player_deck.append(deck[card_index])
+			card_index += 1
+		dict[i] = player_deck
+	
+	# Add trump card, if there are cards left in the deck
+	if card_index == 60:
+		dict["trump"] = -1
+	else:
+		dict["trump"] = deck[card_index]
+	
+	return dict