fix(completions): add missing fish completions #3151

Job	Run time
Run tests with updated syntaxes and themes	10m 15s
License checks	1m 13s
Documentation	58s
Run tests with system wide configuration	3m 47s
cargo audit	7s
Ensure 'cargo fmt' has been run	6s
Extract crate metadata	3s
Minimum supported rust version	2m 50s
aarch64-unknown-linux-gnu (ubuntu-20.04)	3m 39s
arm-unknown-linux-gnueabihf (ubuntu-20.04)	7m 28s
arm-unknown-linux-musleabihf (ubuntu-20.04)	5m 42s
i686-pc-windows-msvc (windows-2019)	5m 37s
i686-unknown-linux-gnu (ubuntu-20.04)	3m 31s
i686-unknown-linux-musl (ubuntu-20.04)	5m 27s
x86_64-apple-darwin (macos-12)	4m 13s
x86_64-pc-windows-gnu (windows-2019)	11m 50s
x86_64-pc-windows-msvc (windows-2019)	6m 1s
x86_64-unknown-linux-gnu (ubuntu-20.04)	3m 28s
x86_64-unknown-linux-musl (ubuntu-20.04)	5m 23s
all-jobs	7s
Publish to Winget	0s
	1h 21m 45s

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