Merge branch 'fallback_status_v2' into main

Cargo.lock

crates/arti-client/Cargo.toml

crates/arti-client/src/config.rs

crates/tor-circmgr/Cargo.toml

crates/tor-circmgr/src/config.rs

crates/tor-circmgr/src/lib.rs

crates/tor-circmgr/src/mgr.rs

crates/tor-circmgr/src/path.rs

crates/tor-circmgr/src/path/dirpath.rs

crates/tor-circmgr/src/path/exitpath.rs

crates/tor-dirmgr/Cargo.toml

crates/tor-dirmgr/src/bootstrap.rs

crates/tor-dirmgr/src/config.rs

crates/tor-dirmgr/src/lib.rs

crates/tor-guardmgr/Cargo.toml

crates/tor-guardmgr/src/err.rs

crates/tor-guardmgr/src/fallback.rs

crates/tor-guardmgr/src/fallback/set.rs

crates/tor-guardmgr/src/fallback/status.rs

crates/tor-guardmgr/src/guard.rs