Arch #7 Person

[fbtom]

Refering to #121

Context:
Person is an object defining data such as:
name, address, identification number (pesel), phoneNumber etc.

Requirements:
Please check data structures responsible for creating Person
Adjust known parts such as indentification number to be validated within it's construction - exception should be catched within creation of temporary object of Patient, Doctor, Receptionist, etc.
By now please validate it and raise exception when invalid pesel is provided (same as previous implementation)
Other validations can be made (define issues for that if you find it necessary)