[FEATURE] Add informative __str__ and __repr__ methods

[ericbstie]

Describe the solution you'd like

Add __str__ and __repr__ methods that better tell what the object is. For example:

>>> print(tibber.homes[0])
<tibber.types.home.TibberHome object at 0x000002C17D154B20>
>>> 
>>> # Instead:
>>> print(tibber.homes[0])
VitaHuset owned by Arya Stark at Winterfell Castle 1.
>>>

[ericbstie]

Just updating this issue with a note: A lot of classes still require these descriptive text representations.