Add -EnableExit parameter to ease CI usage

[BatmanAMA]

Current Behavior

Invoke-ScriptAnalyzer always sets the exit code to 0

Proposed behavior

When the analyzer outputs problems, enable exit would also generate an exit code equal to the number of problems found.

[bergmeister]

@BatmanAMA The PR is close to getting merged and I think/hope we can expect a new release of PSSA coming up soon.

[BatmanAMA]

@bergmeister - You're awesome! I actually opened this with the plan to circle back in january to do it. One thing off my plate and my CI is a little cleaner.

[bergmeister]

@BatmanAMA You're welcome. Feel free to pick up any other issues if you feel like or make other suggestions. I personally use PSSA in CI like that using Pester in case you're interested.

[BatmanAMA]

That's not a bad idea - I personally split it into a different step (I have test and analyze) but to be honest, I rarely analyze without testing and vice versa.