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>

tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.S7.IntegrationTests/S7_1500/S7_1500Profile.cs

@@ -0,0 +1,53 @@
+using S7NetCpuType = global::S7.Net.CpuType;
+
+namespace ZB.MOM.WW.OtOpcUa.Driver.S7.IntegrationTests.S7_1500;
+
+/// <summary>
+///     Driver-side configuration matching what <c>Docker/profiles/s7_1500.json</c> seeds
+///     into the simulator's DB1 + MB areas. Tag names here become the full references
+///     the smoke tests read/write against; addresses map 1:1 to the JSON profile's
+///     seed offsets so a seed drift in the JSON surfaces as a driver-side read
+///     mismatch, not a mystery test failure.
+/// </summary>
+public static class S7_1500Profile
+{
+    public const string ProbeTag = "ProbeProbeWord";
+    public const int ProbeSeedValue = 4242;
+
+    public const string SmokeI16Tag = "SmokeI16";
+    public const short SmokeI16SeedValue = -12345;
+
+    public const string SmokeI32Tag = "SmokeI32";
+    public const int SmokeI32SeedValue = 1234567890;
+
+    public const string SmokeF32Tag = "SmokeF32";
+    public const float SmokeF32SeedValue = 3.14159f;
+
+    public const string SmokeBoolTag = "SmokeBool";
+
+    public const string WriteScratchTag = "WriteScratch";
+
+    public static S7DriverOptions BuildOptions(string host, int port) => new()
+    {
+        Host = host,
+        Port = port,
+        CpuType = S7NetCpuType.S71500,
+        Rack = 0,
+        Slot = 0,
+        Timeout = TimeSpan.FromSeconds(5),
+        // Disable the probe loop — the integration tests run their own reads +
+        // a background probe would race with them for the S7netplus mailbox
+        // gate, injecting flakiness that has nothing to do with the code
+        // under test.
+        Probe = new S7ProbeOptions { Enabled = false },
+        Tags =
+        [
+            new S7TagDefinition(ProbeTag,     "DB1.DBW0",  S7DataType.UInt16),
+            new S7TagDefinition(SmokeI16Tag,  "DB1.DBW10", S7DataType.Int16),
+            new S7TagDefinition(SmokeI32Tag,  "DB1.DBD20", S7DataType.Int32),
+            new S7TagDefinition(SmokeF32Tag,  "DB1.DBD30", S7DataType.Float32),
+            new S7TagDefinition(SmokeBoolTag, "DB1.DBX50.3", S7DataType.Bool),
+            new S7TagDefinition(WriteScratchTag, "DB1.DBW100", S7DataType.UInt16),
+        ],
+    };
+}