Merge pull request github#21012 from hvitved/csharp/nhibernate-sql-sinks

C#: Add `NHibernate` SQL sinks

Author: hvitved

csharp/ql/lib/ext/NHibernate.model.yml

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+extensions:
+  - addsTo:
+      pack: codeql/csharp-all
+      extensible: sinkModel
+    data:
+      - ["NHibernate", "ISession", True, "CreateSQLQuery", "(System.String)", "", "Argument[0]", "sql-injection", "manual"]
+      - ["NHibernate", "IStatelessSession", True, "CreateSQLQuery", "(System.String)", "", "Argument[0]", "sql-injection", "manual"]
+      - ["NHibernate.Impl", "AbstractSessionImpl", True, "CreateSQLQuery", "(System.String)", "", "Argument[0]", "sql-injection", "manual"]

csharp/ql/src/change-notes/2025-12-11-nhibernate-sql-sinks.md

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+---
+category: minorAnalysis
+---
+* Added `NHibernate.ISession.CreateSQLQuery`, `NHibernate.IStatelessSession.CreateSQLQuery` and `NHibernate.Impl.AbstractSessionImpl.CreateSQLQuery` as SQL injection sinks.