Porting Scaleout sample from C# to JavaScript

[gandiddi]

Porting Scaleout sample from C# to JavaScript

[tracyboehrer]

@gandiddi There are some unresolved comments.

[gandiddi]

See inline comments. Also, not at all obivous, but there is a README in the samples folder that has a table of samples for each language. Likely need to update that table to include this.

Updated the table in README for JS scaleout sample