Minor update to 2.0.1 - socials

* Add SocialLogin functionality
* Add SocialLoginAndAuthorize functionality

Author: patrykf-dev

Core/SocialProvider.cs

@@ -0,0 +1,13 @@
+namespace GameSwiftSDK.Core
+{
+    /// <summary>
+    /// Available providers that can be used to login.
+    /// </summary>
+    public enum SocialProvider
+    {
+        /// <summary>
+        /// Epic Games - https://store.epicgames.com/
+        /// </summary>
+        EpicGames,
+    }
+}

Core/SocialProvider.cs.meta

@@ -42,13 +42,6 @@ public static GameSwiftSdkId Instance
 		/// </summary>
 		public string AccessToken { get; private set; }
 
-		/// <summary>
-		/// Stored API Refresh Token.
-		/// </summary>
-		public string RefreshToken { get; private set; }
-
-		private bool _accessTokenRetrieved;
-
 		[RuntimeInitializeOnLoadMethod]
 		private static void Instantiate ()
 		{