Draft: Add support for forwarding viewport coordinates and fix deprecated scroll value (pageXOffset and pageYOffset)

[vivekyadav15]

Type of change

• Bugfix

• Feature

• New bidder adapter

• Updated 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

• FIX: Replace deprecated pageXOffset and pageYOffset with scrollX and scrollY respectively
• ADD: Viewport coordinates in bidRequest.ext.vcoords

[patmmccann]

we're noticing some parallel implementations of this functionality; could you import from a library?

[github-actions]

Whoa there, partner! 🌵🤠 We wrangled some duplicated code in your PR:

• modules/underdogmediaBidAdapter.js has 31 duplicated lines with libraries/viewportAndViewability/viewportAndViewability.js
• modules/omsBidAdapter.js has 10 duplicated lines with modules/onomagicBidAdapter.js

Reducing code duplication by importing common functions from a library not only makes our code cleaner but also easier to maintain. Please move the common code from both files into a library and import it in each. We hate that we have to mention this, however, commits designed to hide from this utility by renaming variables or reordering an object are poor conduct. We will not look upon them kindly! Keep up the great work! 🚀