feat(rpc): Supervisor RPC Server

[refcell]

Description

Creates an rpc server for the kona-node that will service the supervisor.

Progress on #2108

[refcell]

📚 $\text{Stack Overview}$

Pulls submitted in this stack:

• feat(rpc): Supervisor RPC Server #2162 👈
• feat(node): Supervisor Actor Setup #2161
• main

This comment was automatically generated by st.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 50 lines in your changes missing coverage. Please review.

Project coverage is 78.4%. Comparing base (6803561) to head (f823e3e).
Report is 7 commits behind head on main.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
crates/node/rpc/src/supervisor/server.rs	0.0%	44 Missing ⚠️
crates/node/rpc/src/supervisor/config.rs	0.0%	5 Missing ⚠️
crates/node/rpc/src/jsonrpsee.rs	0.0%	1 Missing ⚠️

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[Copilot]

Pull Request Overview

This PR implements a new Supervisor RPC Server for the kona-node supervisor by introducing a SupervisorExt provider in the node service and integrating new supervisor RPC server logic throughout the codebase.

• Added a SupervisorExt associated type and corresponding accessor in ValidatorNodeService.
• Updated RollupNode to construct and return a supervisor RPC server extension based on SupervisorRpcConfig.
• Introduced new modules and public exports for the supervisor RPC server in the rpc and actors sections and updated Cargo.toml dependencies accordingly.

Reviewed Changes

Copilot reviewed 16 out of 16 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
crates/node/service/src/service/validator.rs	Added SupervisorExt type and TODO placeholders for supervisor actor integration in the validator service.
crates/node/service/src/service/standard/node.rs	Updated RollupNode to include supervisor_rpc configuration and defined supervisor_ext implementation with error handling TODO note.
crates/node/service/src/service/standard/builder.rs	Removed an unused attribute and added supervisor_rpc assignment in the node builder.
crates/node/service/src/lib.rs	Adjusted imports to include the new SupervisorRpcServerExt.
crates/node/service/src/actors/supervisor/*	Added and exported new supervisor RPC server extension types and traits.
crates/node/rpc/src/supervisor/*, crates/node/rpc/src/jsonrpsee.rs	Introduced and integrated a new supervisor RPC server implementation and configuration.
crates/node/service/Cargo.toml	Added dependency on tokio-stream.

[theochap]

Looks good, left a few comments. Most of them are non blocking