[Rust-Axum] Adapt changes upon Host extractor sunset

[linxGnu]

cc @wing328
This PR update Rust-Axum Generator to include Host info without Host extractor. See also: tokio-rs/axum#3442

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Summary by cubic

Update the Rust-Axum generator to remove axum_extra::extract::Host and use headers::Host via TypedHeader in all handlers and traits. This keeps Host info available and aligns with axum’s Host extractor sunset.

• Migration
  • Change handler params from Host to TypedHeader(Host).
  • Update traits and auth interfaces to use &headers::Host.
  • In Cargo.toml, add headers = "0.4" and enable axum-extra feature "typed-header".

^{Written for commit 12bf7e9. Summary will update automatically on new commits.}

[cubic-dev-ai]

No issues found across 94 files

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