Add parsing and flag for -bl for MSbuild-related commands

[baronfel]

Fix #43310 by explicitly modeling the flag (including argument parsing as described/implemented by MSBuild).

cc @rainersigwald for more MSBuild arg bindings

[baronfel]

@mariam-abdulla here's how I used the bl option to correctly forward along binlog information. Add the option to your parser, get the value from the parser, and then use the data structure to create the BinaryLogger you need (if any).

[baronfel]

This is what I was afraid of - we can't define -bl in a safe way it seems with System.CommandLine.

-bl can be supplied as a flag and as an option that has some configuration: a binlog filename to create and/or a directive how to manage the files that are imported into the binlog. We can't enforce the MSbuild syntax requirement here of -bl:<stuff> because System.CommandLine also allows -bl <stuff>. We can't use the OnlyTake mechanism inside the option for some implementation reason. So we're stuck here and what we'll have to do for run and test is fall back to manual scraping of the string[] of unbound args.