Add GameDataController for item icon retrieval; update GameItemsRepository and GameItemService for new action effects

Controllers/GameDataController.cs

@@ -0,0 +1,36 @@
+using Microsoft.AspNetCore.Mvc;
+using PetCompanion.Repositories;
+
+namespace PetCompanion.Controllers
+{
+    [ApiController]
+    [Route("api/v1/[controller]")]
+    public class GameDataController : Controller
+    {
+        private readonly GameItemsRepository gameItemsRepository;
+        private readonly ILogger<InventoryController> logger;
+        private readonly Guid userId = Guid.Parse("f5f4b3b3-3b7b-4b7b-8b7b-7b7b7b7b7b7b");
+
+        public GameDataController(
+            ILogger<InventoryController> logger,
+            GameItemsRepository gameItemsRepository)
+        {
+            this.logger = logger;
+            this.gameItemsRepository = gameItemsRepository;
+        }
+
+        [HttpGet("item/icon/{itemId}")]
+        public IActionResult GetItemIcon(int itemId)
+        {
+            try
+            {
+                var iconBytes = gameItemsRepository.GetItemIcon(itemId);
+                return File(iconBytes, "image/png");
+            }
+            catch (Exception ex)
+            {
+                return BadRequest(ex.Message);
+            }
+        }
+    }
+}