Initialize repository

Added basic info to get in game for like...August 2016 ;-;
It's not much but it's a start

RecRoomArchive/Controllers/API/Avatar/V3/AvatarController.cs

@@ -0,0 +1,16 @@
+using Microsoft.AspNetCore.Mvc;
+
+namespace RecRoomArchive.Controllers.API.Avatar.V3
+{
+    [Route(template: "api/[controller]/v3")]
+    [ApiController]
+    public class AvatarController() : ControllerBase
+    {
+        // TODO: Implement
+        [HttpGet(template: "items")]
+        public async Task<ActionResult<List<object>>> GetUnlockedAvatarItems()
+        {
+            return Ok(new List<object>());
+        }
+    }
+}