Update search.py

[RGAlexander216]

• Added the ability to specify the simple_or_comprehensive as an explicit string as well as a SearchEngine.SimpleOrComprehensiveEnum object
• Added type conversion for the lat, lng, and radius parameters in the SearchEngine class' query method with descriptive error handling

[MacHu-GWU]

Good ideal, the right way to implement this should be. I will borrow your idea about the int-like float-like, and add you to the contributor list. Thank you

class XYZEnum(str, enum.Enum):
   ...