Optional name for the build.
This name is stored in the BuildReport and BuildManifest for identification purposes. It is reported as
BuildSummary.buildName in the build's BuildReport, and as
BuildReportSummary.BuildName in the lightweight build summary.
If not specified, the leaf folder name of BuildContentDirectoryParameters.outputPath is used as the default.
Additional resources: BuildSummary.buildName, BuildReportSummary.BuildName, ContentDirectoryHandle.BuildName