[Feature Request] Limit cl_cmdratre for spectators (on the client only)

[ZOVBOT]

Capping cmdrate to 51 (or even 34) for spectators should improve reg on packed servers and those that choke with higher player numbers, and should save a decent amount of bandwidth for players as well. On my standard config I push around 20KB/s up down, while capping at 34 brings that down to only a few kilobytes a second, in-out, so about an 80% reduction in total bandwidth.

As a spec I don't notice any difference but I do run interp at 0.03, which I think is the only sane value and should be the default, but that is another topic.

What are your thoughts? should it be a seperate CVAR (cl_speccmdrate) or is it a bad idea?