Add `Alphabetic` distribution #1276

Job	Run time
Check doc	24s
test-cross (ubuntu-latest, powerpc-unknown-linux-gnu, stable)	1m 7s
Check Clippy and rustfmt	11s
test-ios	21s
test (ubuntu-latest, x86_64-unknown-linux-gnu, stable)	36s
test-miri	5m 14s
test (macos-latest, x86_64-apple-darwin, stable)	47s
test-no-std	13s
test (windows-latest, x86_64-pc-windows-gnu, stable)	3m 8s
test (windows-latest, x86_64-pc-windows-msvc, beta)	1m 26s
test (ubuntu-latest, x86_64-unknown-linux-gnu, MSRV, 1.63.0)	2m 45s
test (ubuntu-latest, sudo apt-get update ; sudo apt install gcc-multilib, i686-unknown-linux-gnu,...	57s
test (ubuntu-latest, x86_64-unknown-linux-gnu, nightly, minimal_versions)	43s
	17m 52s

Provide feedback