F release results

Summary

Fixes SegFaults in the retrieve function (and others) which were caused by the too-early deletion of the transaction object by the garbage collector

Focus

The most relevant line is where we call caosdb_transaction_result_set_release_at instead of caosdb_transaction_result_set_at and release the entity from the result set.

Test Environment

Integration caosdb-juliainttest!7 (merged)

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docs/src/api.md

@@ -12,7 +12,7 @@ Order = [:module, :function, :macro, :type, :constant]
 ## Public API
 
 ```@autodocs
-Modules=[CaosDB, CaosDB.Exceptions, CaosDB.Info, CaosDB.Utility,
+Modules=[CaosDB, CaosDB.Exceptions, CaosDB.Constants, CaosDB.Info, CaosDB.Utility,
 	CaosDB.Connection, CaosDB.Authentication, CaosDB.Entity,
 	CaosDB.Transaction]
 Private=false
@@ -21,7 +21,7 @@ Private=false
 ## Expert-use only API functions
 
 ```@autodocs
-Modules=[CaosDB, CaosDB.Exceptions, CaosDB.Info, CaosDB.Utility,
+Modules=[CaosDB, CaosDB.Exceptions, CaosDB.Constants, CaosDB.Info, CaosDB.Utility,
 	CaosDB.Connection, CaosDB.Authentication, CaosDB.Entity,
 	CaosDB.Transaction]
 Public=false