Storage get count

[SphaxWare]

added these changes A method to retrieve one object:

• Prototype: def get(self, cls, id): cls: class id: string representing the object ID Returns the object based on the class and its ID, or None if not found

A method to count the number of objects in storage:

• Prototype: def count(self, cls=None): cls: class (optional) Returns the number of objects in storage matching the given class. If no class is passed, returns the count of all objects in storage.

[MegaChie]

confirmed