Adding setup for Werkzeug profiling

[hannahker]

These are temporary changes to set up a profiler for the Python code. See this blog post for more detailed instructions on running the profiler and interpreting the results: https://community.plotly.com/t/performance-profiling-dash-apps-with-werkzeug/65199 -- I really recommend using snakeviz as well to interpret results!

I have some WIP notes on profiling results here: https://docs.google.com/presentation/d/1c5_bJ8EUX5w2VCUFq0TEa3KepsdVsMPIboKt4ThIDO4/edit#slide=id.g28d4c0551f8_0_9

[github-actions]

Staging application has been deployed and is available at: https://dash5-services.plotly.host/ml-exchange-staging
Production app name: ml-exchange
Current branch name: profiling-dev
Commit: 27f8304

[ndrezn]

@hannahker I might be able to help abstract this with dekn-client.

[danton267]

PR looks good.
Do we want to merge it or:

• keep it as a separate "profiling" branch for now (so that we don't bloat the app with dev stuff)
• wait for Nathan's package (or wait for it to be integrated into Dash)

I will add some more profiling report into the docs tomorrow

[hannahker]

Yeah, I don't think we want to merge this into the main branch. I think we can close for now and revisit if we need to do more profiling in the future.