Add test for having a new line at the end of a file

[dcrreynolds]

This has come up a number of times in peer review and would be nice to automate.

[PlagueHO]

👍 This would be pretty easy to add I think.

[dcrreynolds]

Ran the test against the default branch of all the DSC repos (count was 55). 17 had at least 1 file missing a new line.

xAzurePack, xAzureStorage, xCertificate, xDefender, xDnsServer, xExchange, xMySql, xNetworking, xPendingReboot, xPSDesiredStateConfiguration, xRemoteDesktopSessionHost, xRobocopy, xSharePoint, xSqlPs, xSQLServer, xStorage, xWindowsEventForwarding.

[KarolKaczmarek]

Thanks @dcrreynolds! Can you reopen pull requests with those tests, similar to #33 which unfortunately was merged and reverted ?
@mbreakey3 Can you add those new lines when you will be going through PSSA errors for these modules?

[dcrreynolds]

Done.