Update ACTiCameraAgent to HTTPCameraAgent to include other HTTP camera brands

[davidvng]

Description

Renames ACTiCameraAgent to HTTPCameraAgent which can grab screenshots from different camera brands that can accept HTTP requests. Currently includes ACTi and Reolink. Also replaces camera information arguments with a config file to better handle increasing number of cameras.

Motivation and Context

Reolink cameras added to site, which uses HTTP requests like ACTi cameras but requires different URL params.

How Has This Been Tested?

Tested on daq-dev with current site cameras.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[BrianJKoopman]

This is looking good. A few suggestions and questions inline below.

EDIT: Also there is a conflict to resolve.

[BrianJKoopman]

Thanks for the updates!