refactor(historian): extract Driver.Historian.Sql.Common from the SQL Server backend (no behaviour change) (1a)

Moves the database-independent logic of the SQL Server historian backend into a new
shared library for the upcoming QuestDB backend (#666): status codes and bits, value/column
mapping, StoredSample + quality clamp, the AtTime and aggregate evaluators, BucketPlan,
LiveWritePreparer and HistoryUpdatePlanner (both with a resolutionTicks parameter, default 1),
tag-name rules, the bootstrap failure cache, health counters, alarm event ids, the event
continuation and severity clamp. The SQL Server backend now calls it; its T-SQL, TVP
builders, connection, bootstrapper and catalog stay.

Tests: StatusCodeOracleTests, ValueWriterPrepareTests, the column half of SampleRowMapperTests
and ProcessedReadTests.Every_enum_member_is_either_served_or_refused move to the new
Sql.Common.Tests under the same names. SqlServer integration tests get mechanical renames
only. Test-name set across the three projects is identical to the baseline (160 tests).

Claude-Session: https://claude.ai/code/session_01Ef2ozxS7QPanGT8uoATbTe

src/Drivers/ZB.MOM.WW.OtOpcUa.Driver.Historian.SqlServer/SqlServerHistorianOptions.cs

@@ -44,11 +44,3 @@ public sealed partial class SqlServerHistorianOptions
         return errors;
     }
 }
-
-/// <summary>Thrown when <c>AutoCreateSchema=false</c> and the historian schema is absent or behind.</summary>
-public sealed class HistorianSchemaMissingException : Exception
-{
-    /// <summary>Creates the exception.</summary>
-    /// <param name="message">Message naming the missing version.</param>
-    public HistorianSchemaMissingException(string message) : base(message) { }
-}