load validator addresses from contract

[JannikSt]

fixes #122

[Copilot]

Pull Request Overview

This PR updates how validator addresses are obtained by loading them directly from the on-chain contract, instead of using a hardcoded or command-line provided address. Key changes include:

• Removing the validator_address argument from CLI options in both worker and discovery components.
• Introducing a new asynchronous method get_validator_role in the PrimeNetworkContract that retrieves the validator addresses.
• Updating API server initialization in both worker and discovery components to build the allowed addresses list using the on-chain validator role.

Reviewed Changes

Copilot reviewed 5 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
worker/src/cli/command.rs	Removed the unused validator_address argument.
worker/src/api/server.rs	Replaced validator_address usage with on-chain validator role retrieval.
shared/src/web3/contracts/implementations/prime_network_contract.rs	Added get_validator_role function to fetch validator addresses and accompanying tests.
discovery/src/main.rs	Removed the CLI argument for validator_address.
discovery/src/api/server.rs	Updated the validator initialization to use on-chain addresses.

Files not reviewed (2)

• Makefile: Language not supported
• discovery/Dockerfile: Language not supported

Comments suppressed due to low confidence (1)

discovery/src/api/server.rs:48

• [nitpick] The variable name 'validator_validator' is ambiguous. Consider renaming it to 'validator_state' for clarity.

let validator_validator = Arc::new(ValidatorState::new(validators));