Add: DataChannel latency test

[gingernaz]

Relevant components:

• Signalling server
• Frontend library
• Frontend UI library
• Matchmaker
• Platform scripts
• SFU

Problem statement:

Measure data channel latency

Solution

Introducing a new test that will show data channel latency values

Documentation

To start the test:

• Open stats panel
• Hit Run Test button under Data Channel Latency Test
• Wait for the results

Test Plan and Compatibility

Compatible with the latest main

[mcottontensor]

I tried looking at this but I'm not sure how to resolve the conflicts here. Seems a few things have moved that I'm not familiar with, Can I get you to update your fork for this please?

[mcottontensor]

Ok never mind I believe I figured it out.
Is there an Unreal Engine side to this change? Has it already been merged into a stream? Testing this locally on main tells me that it is unsupported.