[10.x] Add shouldHashKeys to ThrottleRequests middleware

[fosron]

This adds ability to have rate limiter keys in a non hashed format. I believe there is no added benefit of having those hashed using md5 or sha1 most of the time, and that could not be changed without extending and refactoring current middleware ATM.

Original key:

With false as the setting:

In our case this allows us to have data of rate limit available to outside systems like Grafana etc, without creating some other, duplicate, data.

The default setting would still be true, otherwise it could be adjusted in any Service Provider (f.e. RouteServiceProvider).

ThrottleRequests::setShouldHashKeys(true);

One thing i'm not sure is whether having a static key based setting is reasonable here. Maybe it could be added somewhere in config/ , but i did not find a reasonable place.

WDYT?

Thanks.

[DomasWEB]

Good job, @fosron !