Added a new shares.py file in the schema folder to handle schema-related logic for share objects. Modified shares.py in the api\v2 folder to include new decorators methods that interact with the schema layer. (931715)

Added a new shares.py file in the schema folder to handle schema-related logic for share objects. Modified shares.py in the api\v2 folder to include new decorators methods that interact with the schema layer. (931715) · Gerrit Code Review