Drf query string tokens

Added middlewares

1. QueryStringDRFAuthTokenMiddleware
2. QueryStringSimpleJWTAuthTokenMiddleware

Added middleware stacks

1. DRFAuthTokenMiddlewareStack
2. SimpleJWTAuthTokenMiddlewareStack

Non lowercase headers

Add non lowercase headers handle.

Initial

Features

• Django REST framework token authentication middleware
• Simple JWT middleware
• Easily extendable middlewares to work with auth tokens placed in request headers, cookie and query string