Initialize repository

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

RecRoomArchive.Models/API/PlatformLogin/Responses/BaseLoginResponse.cs

@@ -0,0 +1,13 @@
+using System.Text.Json.Serialization;
+
+namespace RecRoomArchive.Models.API.PlatformLogin.Responses
+{
+    public class BaseLoginResponse
+    {
+        [JsonPropertyName(name: "Token")]
+        public string Token { get; set; } = string.Empty;
+
+        [JsonPropertyName(name: "PlayerId")]
+        public ulong PlayerId { get; set; }
+    }
+}