feat(game): add init method to ClientGameState

- Introduced `init` method to initialize `discardPile` in `ClientGameState`.
- Added `<ranges>` header to support future range-based operations.

src/game/GameState.cpp

@@ -6,6 +6,7 @@
  */
 #include "GameState.h"
 
+#include <ranges>
 #include <stdexcept>
 #include <utility>
 
@@ -104,6 +105,12 @@ namespace UNO::GAME {
         return this->player_.getCards();
     }
 
+    void ClientGameState::init(DiscardPile discardPile)
+    {
+        this->discardPile_ = std::move(discardPile);
+    }
+
+
     void ClientGameState::draw(const Card &card)
     {
         this->player_.draw(card);