Add support for TeamCity build status message

[BlythMeister]

The current write status message is not a persistent status message (for the final build status)

Add support to update the final build status message

Would be nice to have a prepend, append and replace method for the final build status.

Documentation of format can be found here: https://www.jetbrains.com/help/teamcity/service-messages.html#Reporting+Build+Status

As stated, the current status message can be included in the new status using {build.status.text}
As a convention, messages should be separated using a semi colon.

[gep13]

This has been created as an issue here: #4019 and therefore this discussion can be closed.