Rule to warn against having a semicolon at the end of the line

[TylerLeonhardt]

function foo {
    $a = 1 + $b; # semicolon not needed
}

Install-Module Polaris; $a = 1 + $b; # semicolon needed after install-module, not needed after addition

We should warn against using semicolons at the end of a line.

[bergmeister]

I actually put semicolons at the end of a line by design so that I can safely copy-paste the script into any console host (I use ConEmu as a console host, I do not use the one by powershell or pwsh directly)

[johnbooze]

This rule would help enforce this PoshCode style guideline:
https://github.com/PoshCode/PowerShellPracticeAndStyle/blob/master/Style-Guide/Code-Layout-and-Formatting.md#avoid-using-semicolons--as-line-terminators

[bergmeister]

Implemented in #1806