Publish stable client proto inputs

src/MxGateway.Tests/Contracts/GatewayContractInfoTests.cs

@@ -10,6 +10,12 @@ public sealed class GatewayContractInfoTests
         Assert.Equal("mxaccess-worker", GatewayContractInfo.DefaultBackendName);
     }
 
+    [Fact]
+    public void GatewayProtocolVersion_StartsAtVersionOne()
+    {
+        Assert.Equal(1u, GatewayContractInfo.GatewayProtocolVersion);
+    }
+
     [Fact]
     public void WorkerProtocolVersion_StartsAtVersionOne()
     {