chore: release v0.8.0

[github-actions]

🤖 New release

• rmcp-macros: 0.7.0 -> 0.8.0
• rmcp: 0.7.0 -> 0.8.0 (⚠ API breaking changes)

⚠ rmcp breaking changes

--- failure method_parameter_count_changed: pub method parameter count changed ---

Description:
A publicly-visible method now takes a different number of parameters.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#fn-change-arity
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.43.0/src/lints/method_parameter_count_changed.ron

Failed in:
  rmcp::transport::auth::AuthorizationSession::new now takes 4 parameters instead of 3, in /tmp/.tmpu5LVm6/rust-sdk/crates/rmcp/src/transport/auth.rs:622
  rmcp::transport::AuthorizationSession::new now takes 4 parameters instead of 3, in /tmp/.tmpu5LVm6/rust-sdk/crates/rmcp/src/transport/auth.rs:622
  rmcp::transport::auth::OAuthState::start_authorization now takes 4 parameters instead of 3, in /tmp/.tmpu5LVm6/rust-sdk/crates/rmcp/src/transport/auth.rs:793

Changelog

rmcp-macros

0.8.0 - 2025-10-04

Fixed

• generate default schema for tools with no params (#446)

rmcp

0.8.0 - 2025-10-04

Added

• allow clients to override client_name (#469)

Fixed

• (oauth) support suffixed and preffixed well-knonw paths (#459)
• generate default schema for tools with no params (#446)

Other

• bump to rust 1.90.0 (#453)

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This PR was generated with release-plz.

[alexhancock]

Makes client_name an optional param when starting oauth sessions, but feels useful for those who need to customize it