feat: add ws endpoint to SubnetRegistrator.sol

[JDawg287]

Description

This PR adds an extra WebSocket parameter, for registering a subnet. It is to avoid inferring the WebSocket endpoint from the HTTP endpoint.

BREAKING CHANGES

• SubnetRegistrator's endpoint field for subnets has been renamed to endpointHttp (see more details below)

Additions and Changes

• Renamed the regular endpoint to endpointHttp
• Added the endpointWs parameter for the registerSubnet func
• Changed relevant unit tests

PR Checklist:

• I have performed a self-review of my code
• I have commented on my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added or updated tests that comprehensively prove my change is effective or that my feature works

[sebastiendan]

Small detail that can have some degree of importance: I would rename to endpointHttp and endpointWs so that the two fields are kept together in an alphabetically ordered list of variables and so that same-domain variables are also grouped by the same prefix (domain-qualifier instead of qualifier-domain).

[JDawg287]

Small detail that can have some degree of importance: I would rename to endpointHttp and endpointWs so that the two fields are kept together in an alphabetically ordered list of variables and so that same-domain variables are also grouped by the same prefix (domain-qualifier instead of qualifier-domain).

Done!

[sebastiendan]

Small detail that can have some degree of importance: I would rename to endpointHttp and endpointWs so that the two fields are kept together in an alphabetically ordered list of variables and so that same-domain variables are also grouped by the same prefix (domain-qualifier instead of qualifier-domain).

Done!

Nice! Just a note: I didn't mean you should have reordered the function args in an alphabetically ordered list (should looks odd and very uncommon to me).

One more thing: Can you open the sibling PR on local-erc20-messaging-infra to have an e2e test passing and linked here? (as you did recently for contract/script updates)

[sebastiendan]

@JDawg287 Here's the green e2e tests ✅
https://github.com/topos-protocol/e2e-tests/actions/runs/6733686509

I will merge the PR later today as there's still one thing to update.