Change publisherId to zoneId

[vladi-mmg]

Type of change

• Bugfix
• Feature
• New bidder adapter
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Does this change affect user-facing APIs or examples documented on http://prebid.org?
• Other

Description of change

Change param publisherId to zoneId
Add gdpr
Add supply chain
Add video media type

• test parameters for validating bids

{
  bidder: 'marsmedia',
  params: {
       'zoneId' : 9999
  }
}

• contact email of the adapter’s maintainer
• official adapter submission

For any changes that affect user-facing APIs or example code documented on http://prebid.org, please provide:

• A link to a PR on the docs repo at https://github.com/prebid/prebid.github.io/
  Update doc file for Marsmedia Bid Adapter prebid.github.io#1704

Other information

[mike-chowla]

LGTM