[CLI] Incorrect exit code when analyzing multiple projects or solutions

[PeterKaszab]

Product and Version Used:
Roslynator.DotNet.Cli 0.5.0

Steps to Reproduce:
Create 2 projects:

• The first project contains issues that should be reported by the roslynator analyze command
• The second project does not contain issues

Run analyze command roslyantor analyze path/to/first.csproj path/to/second.csproj

Actual Behavior:
The exit code will be 0, as the last successful command status will overwrite the previous status in MSBuildWorkspaceCommand.cs

Expected Behavior:
The exit code should be 1

[josefpihrt]

@PeterKaszab Do you want to make a PR?

[PeterKaszab]

@PeterKaszab Do you want to make a PR?

Yes, I will check this issue next week.