PoC v0.0.1-alpha to dos

[yomexzo]

• Proxy request as is - forwarding headers and body and parameters
• Transpose response to a standard format. i.e introduce before and after callbacks for each request
• Be able to use output from request as input in another. such that all request definitions have access to the global context (i.e request info sent originally and status of all related tasks)

[darilldrems]

• add load balancing functionality to destination url