SSDM-13251: Added missing transaction api methods handling to server, java-client and javascript-client

SSDM-13251: Added simple implementations of TwoPhaseTransactionAPI methods to server-data-store java client

SSDM-13251: Changed dependencies of server-data-store to use new api-data-store-server project. Added basic interfaces, dtos and exceptions to api-data-store-server

SSDM-13251: Added api-data-store-server-java project with dependencies to lib-json and lib-transactional-file-system