CBG-3778 remove rt.*Directly functions

[torcolvin]

CBG-3778 remove rt.*Directly functions

• change the REST functions to add CV property. Add ticket to write tests.

Integration Tests

• GSI=true,xattrs=true https://jenkins.sgwdev.com/job/SyncGateway-Integration/3247/ (known flakes)

[Copilot]

Pull Request Overview

This PR removes the deprecated rt.*Directly functions and refactors code to use REST API calls instead of direct database operations. The changes primarily involve switching test code from internal database operations to REST endpoints and adding support for Conflict Vectors (CV) in API responses.

Key changes:

• Removes PutDocDirectly, UpdateDocDirectly, DeleteDocDirectly, and PutDocDirectlyInCollection functions
• Updates API handlers to return CV (Conflict Vector) information in responses
• Adds stub functions WaitForRevTreeVersion and WaitForRevTreeTombstone for rev tree version checking until ISGR supports CV
• Refactors numerous test files to use REST API calls instead of direct database operations

Reviewed Changes

Copilot reviewed 17 out of 17 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
rest/utilities_testing_resttester.go	Removes direct database operation methods and adds CV support helpers
rest/utilities_testing.go	Updates response parsing to include CV extraction
rest/doc_api.go	Adds CV to PUT, DELETE, and attachment API responses
rest/revocation_test.go	Converts from direct DB calls to REST API calls
rest/replicatortest/replicator_test.go	Updates test methods and adds temporary test skip
rest/importtest/import_test.go	Converts direct DB operations to REST calls
rest/doc_api_test.go	Updates tests to use REST API and adds CV validation
rest/changestest/changes_api_test.go	Converts direct update to REST API call
rest/bootstrap_test.go	Updates response validation to handle CV
Multiple BLIP test files	Converts from direct DB operations to REST API calls

[bbrks]

Should be done by #7697