Use request_meta middleware

[blind-oracle]

• Drops redundant request_id middleware
• request_meta brings optional GeoIP support to HTTP LB
• Adds CLI options to trust x-request-id/x-real-ip headers (won't be used on LB now)
• Adds option to specify ACME account credentials (also not used for now)
• Updates crates

[Copilot]

Pull request overview

Replaces custom request-ID handling with request_meta, adding trusted-header, GeoIP, and ACME credential configuration.

Changes:

• Integrates request metadata into routing and logging.
• Adds related CLI options and ACME credential support.
• Updates ic-bn-lib and transitive dependencies.

Reviewed changes

Copilot reviewed 8 out of 9 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/tls.rs	Supplies ACME account credentials.
src/routing.rs	Installs request metadata middleware.
src/middleware/request_id.rs	Removes redundant middleware.
src/middleware/mod.rs	Removes deleted module export.
src/middleware/metrics.rs	Logs remote address and country metadata.
src/core.rs	Handles fallible router setup.
src/cli.rs	Adds trust, GeoIP, and ACME options.
Cargo.toml	Upgrades ic-bn-lib.
Cargo.lock	Updates resolved dependencies.

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