Added PreBuild.ps1

Pulling NHibernate.SQLAzure specific content from https://github.com/MRCollective/AppVeyorConfig/edit/master/appveyor.yml

PreBuild.ps1

@@ -0,0 +1,25 @@
+
+[reflection.assembly]::LoadWithPartialName("Microsoft.SqlServer.Smo") | Out-Null
+[reflection.assembly]::LoadWithPartialName("Microsoft.SqlServer.SqlWmiManagement") | Out-Null
+
+$serverName = $env:COMPUTERNAME
+$instanceName = 'SQL2019'
+
+$smo = 'Microsoft.SqlServer.Management.Smo.'
+$wmi = new-object ($smo + 'Wmi.ManagedComputer')
+
+# Enable TCP/IP
+$uri = "ManagedComputer[@Name='$serverName']/ServerInstance[@Name='$instanceName']/ServerProtocol[@Name='Tcp']"
+$Tcp = $wmi.GetSmoObject($uri)
+$Tcp.IsEnabled = $true
+$TCP.alter()
+
+# Enable named pipes
+$uri = "ManagedComputer[@Name='$serverName']/ ServerInstance[@Name='$instanceName']/ServerProtocol[@Name='Np']"
+$Np = $wmi.GetSmoObject($uri)
+$Np.IsEnabled = $true
+$Np.Alter()
+
+Set-Service SQLBrowser -StartupType Manual
+Start-Service SQLBrowser
+Start-Service "MSSQL`$$instanceName"