gdprEnforcement: transmitEids and transmitPreciseGeo activity controls

[dgirardi]

Type of change

• Feature

Description of change

• By default, prevent bidders from receiving EIDs unless consent or vendor exceptions were given for purposes 2-10
• Introduce eidsRequireP4Consent flag; when in a 'personalizedAds' gdprEnforcement rule, replaces the complicated algorithm above with a simple check against purpose 4
• expand the scope of the 'transmitUfpd' control to cover a number of other ortb2 fields
• introduce transmitPreciseGeo gdpr enforcement rule, which when activated checks against "special feature 1" opt-in

Other information

Closes #10184

[patmmccann]

this is looking pretty good, are there a bunch of docs changes needed?

[Fawke]

This looks good, but it may require some docs update.