Multiple #[godot_api] impl blocks #2955

Job	Run time
rustfmt	25s
clippy	1m 56s
doc-lints	40s
license-guard	30s
godot-itest (macos)	45s
godot-itest (windows)	2m 27s
run-examples	1m 13s
unit-test	1m 23s
godot-itest (linux-full)	1m 11s
godot-itest (linux-features-experimental)	1m 28s
godot-itest (linux-4.1)	39s
godot-itest (linux-4.2)	53s
godot-itest (linux-memcheck)	1m 55s
ci-status	2s
	15m 27s

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