Update README.md: Add x-cmd method to install bat #3811

Job	Run time
Extract crate metadata	4s
Ensure 'cargo fmt' has been run	3s
License checks	1m 8s
cargo audit	4s
Run tests with updated syntaxes and themes	5m 34s
Documentation	38s
Run tests with system wide configuration	2m 14s
aarch64-unknown-linux-musl (ubuntu-20.04)	3m 52s
Minimum supported rust version	1m 29s
aarch64-unknown-linux-gnu (ubuntu-20.04)	4m 10s
arm-unknown-linux-gnueabihf (ubuntu-20.04)	4m 17s
arm-unknown-linux-musleabihf (ubuntu-20.04)	4m 10s
i686-pc-windows-msvc (windows-2019)	7m 20s
i686-unknown-linux-gnu (ubuntu-20.04)	4m 6s
i686-unknown-linux-musl (ubuntu-20.04)	3m 38s
x86_64-apple-darwin (macos-12)	4m 57s
aarch64-apple-darwin (macos-14)	2m 51s
x86_64-pc-windows-gnu (windows-2019)	8m 36s
x86_64-pc-windows-msvc (windows-2019)	7m 19s
x86_64-unknown-linux-gnu (ubuntu-20.04)	3m 38s
x86_64-unknown-linux-musl (ubuntu-20.04)	3m 42s
all-jobs	1s
Publish to Winget	0s
	1h 13m 51s

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