Create version specific dir for generated libs.

Need to create version specific directory so that a client/VHAL
implementation can link against a previously released property
interface.

Otherwise we force all the current clients/servers that use the
generated libs to use the latest property interface library.

Test: Presubmit
Bug: 337328290
Change-Id: I07ee8d0c2c6fa5c1c21f93a54d8b7455a2fad6d7