Gate db.query.text and db.query.parameter.* behind opt-in flags

Per OTel semantic conventions, db.query.text and db.query.parameter.*
are Opt-In level attributes that may expose sensitive data. They should
not be collected by default. Added IsQueryTextTracingEnabled flag and
reuse IsParameterLoggingEnabled for parameter tracing.

Author: fdcastel

src/FirebirdSql.Data.FirebirdClient/Logging/FbLogManager.cs

@@ -23,6 +23,7 @@ namespace FirebirdSql.Data.Logging;
 public static class FbLogManager
 {
 	public static bool IsParameterLoggingEnabled { get; private set; } = false;
+	public static bool IsQueryTextTracingEnabled { get; private set; } = false;
 
 	private static ILoggerFactory LoggerFactory = NullLoggerFactory.Instance;
 
@@ -32,6 +33,9 @@ public static void UseLoggerFactory(ILoggerFactory loggerFactory) =>
 	public static void EnableParameterLogging(bool enable = true) =>
 		IsParameterLoggingEnabled = enable;
 
+	public static void EnableQueryTextTracing(bool enable = true) =>
+		IsQueryTextTracingEnabled = enable;
+
 	internal static ILogger<T> CreateLogger<T>() =>
 		LoggerFactory.CreateLogger<T>();
 }

src/FirebirdSql.Data.FirebirdClient/Trace/FbActivitySource.cs

@@ -3,6 +3,7 @@
 using System.Data;
 using System.Diagnostics;
 using FirebirdSql.Data.FirebirdClient;
+using FirebirdSql.Data.Logging;
 
 namespace FirebirdSql.Data.Trace
 {
@@ -72,7 +73,10 @@ internal static Activity CommandStart(FbCommand command)
 
 			// db.query_summary
 
-			activity.SetTag("db.query.text", command.CommandText);
+			if (FbLogManager.IsQueryTextTracingEnabled)
+			{
+				activity.SetTag("db.query.text", command.CommandText);
+			}
 
 			// network.peer.address
 
@@ -83,11 +87,14 @@ internal static Activity CommandStart(FbCommand command)
 				activity.SetTag("server.address", command.Connection.DataSource);
 			}
 
-			foreach (FbParameter p in command.Parameters)
+			if (FbLogManager.IsParameterLoggingEnabled)
 			{
-				var name = p.ParameterName;
-				var value = NormalizeDbNull(p.InternalValue);
-				activity.SetTag($"db.query.parameter.{name}", value);
+				foreach (FbParameter p in command.Parameters)
+				{
+					var name = p.ParameterName;
+					var value = NormalizeDbNull(p.InternalValue);
+					activity.SetTag($"db.query.parameter.{name}", value);
+				}
 			}
 
 			// Only for explicit transactions.