Implement updateValidators for DPoS Module

[mehmetegemen]

Description

Create a private function in the DPoS module for afterBlockExecute hook to use it and implement the logic in an auxiliary function that is reusable and call it in that private function. Also create constants, adjust interfaces and add tests. Also adjust other auxiliary functions that this function going to use for new interfaces.

In this function the logic is about updating validator list with randomSeed that we get from randomAPI and setting BFT parameters with BFT API. See old code for the responsibility of the code and LIP for new adjustments needed to be done to use new modules.

Acceptance Criteria

• Unit tests must pass

Additional Information

• Code must use new module APIs and as much as the old DPoS module code
• Related to Implement afterBlockExecute hook for DPoS module #6722