Rewrite SASL from scratch

- Move NonBlockingBind to own module
- Add SCRAM-SHA-256 and SCRAM-SHA-256-PLUS support
2 jobs from master in 27 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test
passed #8790
run-test

00:00:20

 
  Build
passed #8791
run-build

00:00:06