DEV-90: Add audio recording demo

[tonyhu-x]

No description provided.

[krishnacheemalapati]

Please remove or comment out the console.log statements when we're pushing things to prod. Other than that, looks good!

[tonyhu-x]

Logging should now be disabled. However, since processor.js is not treated as app code, I manually commented out the log statements in the original source and re-compiled a new version.

[tonyhu-x]

The previous commit was to fix a problem that didn't appear when testing using npm run dev. I had to do some fixing on the recorder library end. I kept track of what I did there, so I will not document it within our project.