Add `function_abi_now_unwind` lint and fix `function_abi_no_longer_un… #3175

Job	Run time
Check lint and rustfmt	19s
Build binary	37s
Semver: core-graphics	39s
Build binary (Windows)	1m 36s
Run tests (1.81, false)	4m 57s
Run tests (1.82, false)	4m 47s
Check if version changed	6s
Run tests (stable, false)	4m 39s
Run tests (beta, false)	4m 49s
Run tests (nightly, true)	9m 15s
Caching across rustdoc versions	1m 39s
Semver: libp2p-core 0.37.0	1m 7s
Caching with feature config changed	40s
Semver: bevy_core v0.9.0	33s
Semver: bevy_gltf v0.9.1	48s
Semver: libp2p-dcutr 1.62.0 and libp2p-relay 0.14.0	1m 22s
Semver: libp2p-gossipsub ~0.44.0 + libp2p-request-response ~0.24.0	1m 27s
Semver: sqllogictest v0.13.0	31s
Semver: libp2p-uds 0.37.0	57s
Semver: tokio ~v1.25.0 (explicit)	3s
Check failure when installed rustc is too old	15s
Semver: clap v3.2.0	47s
Semver: dependency has warnings with "-Dwarnings" (libp2p v0.53.1)	1m 15s
Semver: perf-event-open-sys2 v5.0.0	30s
Semver: ref-slice fork (git)	30s
Semver: ref-slice fork (sparse)	19s
Semver: tokio ~v1.25.0 (implicit)	6s
Semver: ref-slice fork (Windows) (git)	1m 15s
Semver: ref-slice fork (Windows) (sparse)	1m 1s
All CI stages	1s
Check for semver compliance	0s
Run the release workflow	0s
	46m 50s

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