Add PREfastXmlSarifConverter to build
Add PREfastXmlSarifConverter to build

BuildAndTest.cmd was failing in a fresh enlistment because the
project PREfastXmlSarifConverter was not selected for building
in either the Debug|AnyCPU or the Release|AnyCPU configurations.
Enabled the project using the Configuration Manager. This adds
two lines to the .sln file. Now it builds.

kschecht/sarif-sdk,kschecht/sarif-sdk,Rolstenhouse/sarif-sdk,kschecht/sarif-sdk,kschecht/sarif-sdk,Rolstenhouse/sarif-sdk,Rolstenhouse/sarif-sdk,kschecht/sarif-sdk,kschecht/sarif-sdk,kschecht/sarif-sdk,Rolstenhouse/sarif-sdk,Rolstenhouse/sarif-sdk,Rolstenhouse/sarif-sdk,Rolstenhouse/sarif-sdk