Add integration test for extending API: Get Module Definitions

- Add new module: bookstore-types
- Import the new module from stores module
- Change integration testwares to comply with
  the new module
- Add new integration test for retrieving module
  definition

Issue-ID: CPS-1135
Change-Id: Ib51c998ceeab50d3fcea212ed55c8ab50ca09257
Signed-off-by: halil.cakal <halil.cakal@est.tech>
10 files changed