Rename idWardRtdProvider to anonymisedRtdProvider

[kyrylenko]

Type of change

• [x] Does this change affect user-facing APIs or examples documented on http://prebid.org?
• [x] Code style update (formatting, local variables)
• [x] Other

Description of change

Introduced the anonymisedRtdProvider module as a replacement for the idWardRtdProvider because the company https://id-ward.com/ has been rebranded to https://www.anonymised.io/. idWardRtdProvider module is maintained for backward compatibility until the next major Prebid release (9.0) Added bidders optional param. Added “enable_download: false” flag to prevent installations of the old idWardRtdProvider module (docs)

Other information

A link to a PR on the docs repo: https://github.com/prebid/prebid.github.io/pull/4702