Enable PSAlignAssignmentStatement analyzer rule (OSOE-538)

[BenedekFarkas]

Factored out from #16.

PSAlignAssignmentStatement: The authors recommend this for readability and the auto-formatting in VS Code takes care of this when powershell.codeFormatting.alignPropertyValuePairs is enabled.

Jira issue

[0liver]

We don't align assignments in any other language we code in, so what would be the incentive to do it for PS?

[BenedekFarkas]

Readability.
In C#, this mostly would mostly apply to object/collection initialization, but it's not that frequent (I don't know if there's an option to do the same, but I haven't checked either).
For PS scripts, this is very common - multiple instances (with up to 6-8 parameters) in a script of even just a couple dozen lines due to parameter splatting.