Add loggingpath to settings.json

[1Jesper1]

1. Maybe we can combine LoggingPathConfigurator and MessagePathConfigurator, because of duplicate code.
2. BootstrapLogger still uses Path.Combine(AppConstants.DataDirectory, "Logs", "PapercutCoreFailure.json");, maybe we can use CreateBootstrapLogger https://nblumhardt.com/2020/10/bootstrap-logger/ , so we can use the settings.config or services?

Can we create tests for this?
PS: Is ServerPathTemplateProviderService in Papercut.Services.Services used?

[AppVeyorBot]

✅ Build Papercut-SMTP 5.9.0-alpha.4.build.648 completed (commit cc2fd424b6 by @1Jesper1)

[Jaben]

Thanks @1Jesper1 for the PR. I'm finally reviewing it. I do have a couple of fixes before I can merge.