feat(telemetry): Telemetry 0.3.0 - service.version and logs over OTLP (scadaproj#55)

Pins ZB.MOM.WW.Telemetry(.Serilog) 0.2.0 -> 0.3.0. ScadaBridgeTelemetryConfig is now
the one place both the AddZbTelemetry registration and the pre-host AddZbSerilog
logger fill their options, so ScadaBridge:Telemetry:Exporter=Otlp sends logs to the
same collector as metrics and traces, with the same Resource. The pre-host container
has no AddZbTelemetry registration for the library's log sink to follow, which is
why the exporter is passed to the logger explicitly. site.id / node.role are
unchanged (still ScadaBridge:Node:SiteId ?? central / ScadaBridge:Node:Role, applied
last so a Telemetry-section key cannot make them diverge from the log enrichers);
service.version now defaults to the entry assembly's informational version.

Host.Tests 699/699 incl. ScadaBridgeTelemetryConfigTests.

Claude-Session: https://claude.ai/code/session_01GT67ACmpMR7b9LGRPLijMi

src/ZB.MOM.WW.ScadaBridge.Host/ScadaBridgeTelemetryConfig.cs

@@ -0,0 +1,42 @@
+using ZB.MOM.WW.Telemetry;
+
+namespace ZB.MOM.WW.ScadaBridge.Host;
+
+/// <summary>
+/// The one place ScadaBridge fills <see cref="ZbTelemetryOptions"/>, shared by the
+/// <c>AddZbTelemetry</c> registration (metrics + traces) and the pre-host <c>AddZbSerilog</c>
+/// logger (logs), so the three signals carry the same Resource and go to the same endpoint.
+/// </summary>
+/// <remarks>
+/// The logger is built on its own pre-host container (see <see cref="ScadaBridgeLogging"/>), where
+/// no <c>AddZbTelemetry</c> registration exists for Telemetry 0.3.0's OTLP log sink to follow, so the
+/// exporter settings are passed to <c>AddZbSerilog</c> explicitly (scadaproj#55).
+/// </remarks>
+internal static class ScadaBridgeTelemetryConfig
+{
+    /// <summary>The operator section: <c>Exporter</c>, <c>OtlpEndpoint</c>, <c>ServiceVersion</c>,
+    /// <c>ExportLogs</c>, <c>ResourceAttributes:*</c>.</summary>
+    internal const string SectionName = "ScadaBridge:Telemetry";
+
+    /// <summary>
+    /// Applies the service name, the <c>ScadaBridge:Telemetry</c> keys and then the node identity.
+    /// <paramref name="siteId"/> / <paramref name="nodeRole"/> are applied LAST so the Resource always
+    /// matches the <c>SiteId</c>/<c>NodeRole</c> log enrichers (both come from <c>ScadaBridge:Node</c>);
+    /// a <c>ScadaBridge:Telemetry:SiteId</c>/<c>:NodeRole</c> key cannot make them diverge.
+    /// <c>service.version</c> defaults from the entry assembly (the git SHA).
+    /// </summary>
+    /// <param name="options">The options to fill.</param>
+    /// <param name="configuration">The application configuration.</param>
+    /// <param name="siteId">The node's site id (<c>ScadaBridge:Node:SiteId</c>, default <c>central</c>).</param>
+    /// <param name="nodeRole">The node's role (<c>ScadaBridge:Node:Role</c>).</param>
+    internal static void Apply(ZbTelemetryOptions options, IConfiguration configuration, string? siteId, string? nodeRole)
+    {
+        ArgumentNullException.ThrowIfNull(options);
+        ArgumentNullException.ThrowIfNull(configuration);
+
+        options.ServiceName = ScadaBridgeLogging.ServiceName;
+        options.ApplyConfiguration(configuration.GetSection(SectionName));
+        options.SiteId = siteId;
+        options.NodeRole = nodeRole;
+    }
+}