Gamoshi Bid Adapter : upgraded to ORTB 2.5-compliant flow (#13576)

* updating the user data sync + adding support for getting the user data from the configuration + update the adaptor to use ortb25Translator

* refactor test for better readability + one fix

* fix tests

* fix import in spec

* resetting config and dnt for next

* remove dnt check

* lint adapter

* After review -
- Removed ~150 lines of redundant helper functions with ortbConverter and ortb25Translator
- Remove custom GDPR handling to align with standard ORTB behavior

Author: mmoses