Add QUARKUS-2492: Transaction API

QUARKUS-2492.md

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+# QUARKUS-2492 - Transaction API
+
+JIRA link: https://issues.redhat.com/browse/QUARKUS-2492
+
+Programmatic distributed JDBC transaction API based on Narayana library
+
+Documentation:
+[Narayana Documentation](https://www.narayana.io/)
+[Quarkus JTA](https://quarkus.io/guides/transaction#programmatic-approach)
+
+## Scope of the testing
+Test development will focus on
+- Quarkus JDBC transactions based on programmatic approach
+- Quarkus JDBC transactions based on lambda approach
+- Verify commons transactions states as "begin", "commit" and "rollback"
+- Verify several supported semantics such as "DISALLOW_EXISTING", "JOIN_EXISTING", "REQUIRE_NEW", "SUSPEND_EXISTING"
+
+### Impact on test suites and testing automation
+We are going to create a new module under SQL/DB folder, in order to develop new JDBC transaction scenarios. 
+The main idea is to develop a "real scenario" where the transactions are handler in a service layer, rather than in entity level. 
+This new module is going to increase the compile time, especially in native mode, and is important to run the scenario in 
+all the platforms, OCP, Baremetal and native mode. I would say that each native compilation could takes about 5 min and then 
+1 extra minute in order to run the scenario itself. Overall my prediction is that the total amount of time required to run 
+transaction API scenarios is about 15 min.
+
+## Getting familiar with the feature
+
+Following actions were taken to ensure familiarity:
+- Ensure documentation is clear and easy to understand
+- Ensure good user experience and simplicity of use
+- Review upstream coverage
+
+## Contacts
+
+* Tester: Pablo Gonzalez Granados <[email protected]>