Update the information about mTLS data in details pages

[lucasponce]

The Inbound/Outbound metrics offer a rich way to group metrics by different criteria:

But it doesn't offer to group traffic by "connection_security_policy" which is used to see what traffic is under mTLS vs plain text.

Grafana has these criteria defined in an explicit way:

And Kiali should provide this information as well, the Graph shows this information on the edges using locks:

What it's not clear in the traffic tab:

In short, this issue would provide:

• A explicit way to tell in the "Traffic" tab which traffic is mTLS vs which one is not.
• A new Inbound/Outbound grouping criteria in the Istio charts to see traffic split into mTLS vs no mTLS.