feat(auth)!: 0.3.0 — ZB.MOM.WW.Auth.ApiKeys.SqlServer package (AddZbApiKeyAuthSqlServer, importer), README/changelog

The `!` marks the new package + version, not an API break — SQLite stays default and
existing consumers need no code change.

Claude-Session: https://claude.ai/code/session_013L3XdmVii9i5sY4FChU8pB

ZB.MOM.WW.Auth/Directory.Build.props

@@ -5,10 +5,12 @@
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
     <LangVersion>latest</LangVersion>
-    <!-- 0.2.1: NovellLdapConnection.Search now skips AD continuation referrals instead of
-         letting them fail the search stage. Without it, a SearchBase at a domain root made
-         every login fail as ServiceAccountBindFailed against a healthy directory. -->
-    <Version>0.2.1</Version>
+    <!-- 0.3.0: new ZB.MOM.WW.Auth.ApiKeys.SqlServer package — a shared SQL Server API-key store
+         for clustered hosts (e.g. a ScadaBridge central pair), fixing the per-node SQLite store
+         going out of sync on failover. Adds the IApiKeyStoreMigrator abstraction (SQLite
+         implements it unchanged). SQLite stays the default for every existing consumer; no
+         consumer code change is required to move to 0.3.0. -->
+    <Version>0.3.0</Version>
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
   </PropertyGroup>