Documentation (#9)

* Add basic GET function

* Create network/request protocols and implementations (#2)

* Create basic protocols and implementations

Added network and request protocols as well as base implementations for each.

* Condense enum + abstract URLRequest

* Convert URLSession to stored variable

* Abstract configuration into enum

* feature/request-body-handling: Configurable request body (#3)

* Allow for data model in body

* Add default content-type header

* Add retry and timeout logic (#4)

* Add basic caching (#5)

* epic/cookie-management: Implement Cookie Management Operations and Request Configuration (#6)

* Implement Cookie Management

* Refactor into CookieManager

* Refactor Request + Private UD

* Add Request cookie method

* Implement batch requests (#7)

* Add docstrings + inline comments