Require Authorization on Hubs as a Global Option

[mikaelm12]

I was thinking we could introduce a global hub option for requiring auth on all hubs. There was a way to do this in classic SignalR but for ASP.NET Core SignalR you'd have to add the Authorize tag to each hub.

It could look something like

services.AddSignalR(options => 
{
    options.RequireAuthorization = true
})

[davidfowl]

Yea that API might be a bit too simplistic. We may want to look at the hub pipeline modules again.

[mikaelm12]

Yeah, that's fine. Was throwing something out there to start the conversation. Just wanted us to take a look at the idea.

[muratg]

Backlogging this.

[analogrelay]

Rolling in to #5353