chore: organize solution into module folders (Core/Server/Drivers/Client/Tooling)

Group all 69 projects into category subfolders under src/ and tests/ so the
Rider Solution Explorer mirrors the module structure. Folders: Core, Server,
Drivers (with a nested Driver CLIs subfolder), Client, Tooling.

- Move every project folder on disk with git mv (history preserved as renames).
- Recompute relative paths in 57 .csproj files: cross-category ProjectReferences,
  the lib/ HintPath+None refs in Driver.Historian.Wonderware, and the external
  mxaccessgw refs in Driver.Galaxy and its test project.
- Rebuild ZB.MOM.WW.OtOpcUa.slnx with nested solution folders.
- Re-prefix project paths in functional scripts (e2e, compliance, smoke SQL,
  integration, install).

Build green (0 errors); unit tests pass. Docs left for a separate pass.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/Client/ZB.MOM.WW.OtOpcUa.Client.Shared/Models/ConnectionInfo.cs

@@ -0,0 +1,41 @@
+namespace ZB.MOM.WW.OtOpcUa.Client.Shared.Models;
+
+/// <summary>
+///     Information about the current OPC UA session.
+/// </summary>
+public sealed class ConnectionInfo
+{
+    public ConnectionInfo(
+        string endpointUrl,
+        string serverName,
+        string securityMode,
+        string securityPolicyUri,
+        string sessionId,
+        string sessionName)
+    {
+        EndpointUrl = endpointUrl;
+        ServerName = serverName;
+        SecurityMode = securityMode;
+        SecurityPolicyUri = securityPolicyUri;
+        SessionId = sessionId;
+        SessionName = sessionName;
+    }
+
+    /// <summary>The endpoint URL of the connected server.</summary>
+    public string EndpointUrl { get; }
+
+    /// <summary>The server application name.</summary>
+    public string ServerName { get; }
+
+    /// <summary>The security mode in use (e.g., "None", "Sign", "SignAndEncrypt").</summary>
+    public string SecurityMode { get; }
+
+    /// <summary>The security policy URI (e.g., "http://opcfoundation.org/UA/SecurityPolicy#None").</summary>
+    public string SecurityPolicyUri { get; }
+
+    /// <summary>The session identifier.</summary>
+    public string SessionId { get; }
+
+    /// <summary>The session name.</summary>
+    public string SessionName { get; }
+}