Adding cloudant change listener

[groezing]

Adding a new sample as Daemon Job. Also add a reference to the overall Readme.
Overall readme needs to be enhanced with more info about the sample.

[reggeenr]

A general note: Can you please adjust the folder naming and use dashes instead of underscores for the folder?

On the naming of files and folder, I suggest to shrink it to the following set of files:

cloudant-change-listener
|- .ceignore
|- .gitignore
|- build
|- Dockerfile
|- function
|   `- function.js
|
|- images
|   `- Architecture.png
|
|- job
|   |- api-helpers.mjs
|   |- job.mjs (formerly cloudant_change_listener.mjs)
|   `- package.json
|
|- README.md
`- run

[groezing]

Review comments considered

[reggeenr]

Hi @groezing , thanks for addressing the comments and adjust the structure. I just did a peak review and a small number of places that needs an adjustment due to the re-arrangement of files and folders.

I will do one more round of testing and verify the whole scenario works end to end.

[reggeenr]

This option most likely needs to get changed.

--src ./job

[groezing]

The --src is ok, because it must point to the folder where the Dockerfile is located.

[reggeenr]

Thanks a ton @groezing for putting so much effort in this sample that provides an end-to-end running solution to demonstrate how to listen on change events in a cloudant database!

LGTM