(feat) Search for .exe on windows

[koppor]

Fixes #20 in a very naive way.

A better solution would do

1. jbang.exe found -> store --version output
2. jbang.cmd found -> store --version output
3. If one of them found: use it
4. If both found: use the one with a greater version number

[maxandersen]

i believe we can't look for jbang first because then it will find that first. shouldn't that stay in place ?

[koppor]

Not sure what that means... I can't be jbang.sh, because this is different... Do OSses find a directory here, which could cause issues?

[maxandersen]

no, it looks up os and environment specific. like looking at PATHEXT on windows.

Meaning it is less deterministic on what binary it will pick; so shell.which('jbang') could give you 'jbang.exe', 'jbang.cmd', or 'jbang.someotherextinPATHEXT' ..and not necessarily in that orhder.

Hence why we in original code check for os first + specific and well known command (i.e. jbang.exe)

[koppor]

OK, I tried to adapt

[maxandersen]

+1, I doing jbang --version is not