geoff evans 0988a55b0a Trace Snapshot to File ...

### Features
We can now write tailing memory to a utrace file. Snapshotting while tracing to a file or socket is supported.
This change introduces a new console command: Trace.SnapshotFile. It writes the profiling data from memory into an optionally specified a utrace file.

### Testing
Run Editor with -tracefile
Run Editor with -trace, connect live with insights
Run Editor without -trace (this does generate a very small utrace since there is memory and data in the tail even though default channels are not enabled)

#rb johan.berg
#jira UE-150302,UE-150292
#preflight 6272a3213e1f2a9d3a88ee3d

#ROBOMERGE-OWNER: geoff.evans
#ROBOMERGE-AUTHOR: geoff.evans
#ROBOMERGE-SOURCE: CL 20124258 via CL 20125717 via CL 20126082
#ROBOMERGE-BOT: UE5 (Release-Engine-Staging -> Main) (v943-19904690)

[CL 20129506 by geoff evans in ue5-main branch]

2022-05-10 17:03:04 -04:00

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Private/Trace

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Public/Trace

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create_standalone.py

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standalone_epilogue.h

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standalone_prologue.h

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TraceLog.Build.cs

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