docs: migrate camera-management docs to here

[ajcasagrande]

If your build fails due to your commit message not passing the build checks, please review the guidelines here: https://github.com/edgexfoundry/edgex-examples/blob/main/.github/Contributing.md

PR Checklist

Please check if your PR fulfills the following requirements:

• [N/A] I have added unit tests for the new feature or bug fix (if not, why?)
• [N/A] I have fully tested (add details below) this the new feature or bug fix (if not, why?)

Testing Instructions

These are merged and migrated from https://github.com/edgexfoundry/device-onvif-camera/blob/main/doc/using-demo-app.md

[ajcasagrande]

@bnevis-i can you merge this?

[presatish]

@lenny-intel please merge this.

[bnevis-i]

Merged on @lenny-intel @rresatish and @ajcasagrande 's behalf.