Info service for interaction with information of entities

Completed

• Create pet with med card
• Get pets with med card by filtering request
• Get one pet without card by id
• Update pet info (without card)
• Delete pet info (with med card) // do not use if not necessary

Uncompleted

• Delete med card // do not use if not necessary
• Create medical_entry
• Get medical_entries with filter
• Delete medical_entry
• Update medical_entry