feat: add setup token

Endpoint/Configuration/General/SetupTokenService.cs

@@ -0,0 +1,28 @@
+using Mirea.Api.Endpoint.Common.Interfaces;
+using System;
+
+namespace Mirea.Api.Endpoint.Configuration.General;
+
+public class SetupTokenService : ISetupToken
+{
+    public ReadOnlyMemory<byte>? Token { get; private set; }
+
+    public bool MatchToken(ReadOnlySpan<byte> token)
+    {
+        if (Token == null || token.Length != Token.Value.Length)
+            return false;
+
+        var token2 = Token.Value.Span;
+
+        int result = 0;
+        for (int i = 0; i < Token.Value.Length; i++)
+            result |= token2[i] ^ token[i];
+
+        return result == 0;
+    }
+
+    public void SetToken(ReadOnlySpan<byte> token)
+    {
+        Token = token.ToArray();
+    }
+}