Adjustments to way the TURN client extenions gets the remote peer IP

[sipsorcery]

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[Copilot]

Pull Request Overview

This PR adjusts the way TURN client extensions obtain the remote peer IP address by replacing the RTPSession parameter with a direct IPAddress parameter and removing the event-based approach.

Key changes:

• Modified TURN client API to accept remote peer IP address directly instead of deriving it from RTP session
• Removed event-driven permission creation in favor of immediate permission setup
• Added environment variable configuration for remote peer IP in example applications

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/net/TURN/TurnClientExtensions.cs	Updated UseTurn method signature to accept IPAddress parameter directly and simplified permission creation
src/net/STUN/STUNClientExtensions.cs	Added documentation remarks about potential issues with STUN approach
src/net/RTP/Streams/MediaStream.cs	Removed TurnClient property and added debug logging for RTCP packets
src/net/RTP/RTPSession.cs	Minor code style improvements and log message updates
examples/SIPExamples/UserAgentServer/Program.cs	Added REMOTE_PEER_IP environment variable support and updated TURN usage
examples/SIPExamples/UserAgentClient/Program.cs	Added REMOTE_PEER_IP environment variable support and updated TURN usage

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