deprecate(lmxproxy): move all LmxProxy code, tests, and docs to deprecated/

LmxProxy is no longer needed. Moved the entire lmxproxy/ workspace, DCL
adapter files, and related docs to deprecated/. Removed LmxProxy registration
from DataConnectionFactory, project reference from DCL, protocol option from
UI, and cleaned up all requirement docs.

deprecated/lmxproxy/src/ZB.MOM.WW.LmxProxy.Client/ClientTlsConfiguration.cs

@@ -0,0 +1,31 @@
+namespace ZB.MOM.WW.LmxProxy.Client;
+
+/// <summary>
+/// TLS configuration for the LmxProxy gRPC client.
+/// </summary>
+public class ClientTlsConfiguration
+{
+    /// <summary>Whether to use TLS for the gRPC connection.</summary>
+    public bool UseTls { get; set; } = false;
+
+    /// <summary>Path to the client certificate PEM file for mTLS.</summary>
+    public string? ClientCertificatePath { get; set; }
+
+    /// <summary>Path to the client private key PEM file for mTLS.</summary>
+    public string? ClientKeyPath { get; set; }
+
+    /// <summary>Path to the server CA certificate PEM file for custom trust.</summary>
+    public string? ServerCaCertificatePath { get; set; }
+
+    /// <summary>Override the server name used for TLS verification.</summary>
+    public string? ServerNameOverride { get; set; }
+
+    /// <summary>Whether to validate the server certificate.</summary>
+    public bool ValidateServerCertificate { get; set; } = true;
+
+    /// <summary>Whether to allow self-signed certificates.</summary>
+    public bool AllowSelfSignedCertificates { get; set; } = false;
+
+    /// <summary>Whether to ignore all certificate errors (dangerous).</summary>
+    public bool IgnoreAllCertificateErrors { get; set; } = false;
+}