Add flox install #3673

Job	Run time
cargo audit	4s
Extract crate metadata	5s
Ensure 'cargo fmt' has been run	23s
Documentation	47s
License checks	1m 7s
Run tests with updated syntaxes and themes	4m 43s
Run tests with system wide configuration	2m 33s
Minimum supported rust version	1m 28s
aarch64-unknown-linux-gnu (ubuntu-20.04)	4m 10s
arm-unknown-linux-gnueabihf (ubuntu-20.04)	3m 49s
arm-unknown-linux-musleabihf (ubuntu-20.04)	4m 13s
i686-pc-windows-msvc (windows-2019)	7m 3s
i686-unknown-linux-gnu (ubuntu-20.04)	3m 31s
i686-unknown-linux-musl (ubuntu-20.04)	4m 32s
x86_64-apple-darwin (macos-12)	6m 26s
aarch64-apple-darwin (macos-14)	2m 52s
x86_64-pc-windows-gnu (windows-2019)	11m 22s
x86_64-pc-windows-msvc (windows-2019)	8m 30s
x86_64-unknown-linux-gnu (ubuntu-20.04)	3m 37s
x86_64-unknown-linux-musl (ubuntu-20.04)	3m 54s
all-jobs	1s
Publish to Winget	0s
	1h 15m 10s

Provide feedback