[WIP] feat: traffic stats collection (Issue #3088)

[MuhamadJuwandi]

Implements traffic stats collection logic for RetroShare Issue #3088. This adds total in/out counters to RsConfigDataRates and the corresponding retrieval methods.

[defnax]

there is a "}" missed
but GXS Service & Turtle traffic calculation not yet done?

[MuhamadJuwandi]

Thanks for the review. I've fixed the missing brace }.

I also fixed the traffic calculation logic:

1. getTotalBandwidthRates now correctly sums up traffic from all connected peers.
2. Added Turtle traffic statistics using rsTurtle->getTrafficStatistics.

Regarding GXS Service: I focused on the main synchronous traffic stats (Peers + Turtle) for now to fix the reported issues

[defnax]

But I tested it let’s freeze retroshare when get connected to a friend
pqipersongrp.cc‎ ->Line 410
Can you update your lib branch to latest master? GUI compile has conflicts lib part isn’t up to date