URL double encoding issue

[OlenaPostindustria]

Objectives

The PrebidMobile SDK encodes URLs, which have been already encoded.

We can handle this issue in the following way:

1. Try to create an URL as is without encoding.
2. If the URL is created without errors - just use it
3. IF the URL is not created due to the error - try to encode it

Precondition - all macros should be resolved before converting the string to the URL.

It would be great if we apply this approach to all places in the SDK where we encode the URL's string now.

Originally posted by @YuriyVelichkoPI in #896 (comment)