Raw requests improvements

[ocervell]

A few useful features would be nice for storing raw responses (-sr):

• Pass a custom directory for raw responses: -srd /path/to/responses/dir (similar to httpx / katana) #129
• Add stored_response_path to JSON lines output to show where the request / response raw file was stored #130

Rationale:
A custom directory is nice to have when you run in distributed environments and you want to save all requests to a shared mount for instance, so that later you can run batch tools to get all the raw requests and analyze them offline (with cariddi, or nuclei, etc...)

The stored_response_path can be useful when saving the results to a database, so that we can later retrieve the corresponding response txt file.

[edoardottt]

Thanks for the issue @ocervell ! Always appreciated. When I'll have more time I'll reason on this a bit better and I will provide my thoughts.

In the meanwhile anyone reading here can be assigned to this issue and work on this :)

These are the open linked issues:

#129

#130

[ocervell]

I might take over it when I get the chance, will let you know ;)