Publish the script on the PowerShell Gallery

[lupino3]

Will need

• a module definition (.psd1)
• a way to build a package to be updated
• manual upload of the first version

Upload of new versions might be automated, but I don't think we'll release new versions often enough to warrant automation.

[lupino3]

https://docs.microsoft.com/en-us/powershell/scripting/learn/writing-portable-modules?view=powershell-6

If possible, make this a portable module for PowerShell Standard (5.1 or, if possible at all, 3 to ensure it will run on WIndows Server 2012).

[lupino3]

It would also be nice to make sure (and test that) the module runs across platforms supported by .NET core (Linux and MacOS).

[lupino3]

Update on the last bit: we are now targeting .NET standard and a simple manual test (running unit tests) works on PowerShell on Linux (on WSL, but that's not important). The only one that is failing on Linux is not working because of different file endlines, can be easily fixed.

[lupino3]

Done in recent commits.