…xing projects previously using these statements to now use <Nullable>enable</Nullable>. Got the Microsoft.DotNet.Cli.Utils.csproj building. More to come.

… enable.

… nullable enable. Added WorkloadRootPath.cs since the tuples were problematic with nullability logic.

…e enable.

…m/dotnet/roslyn-analyzers/blob/main/src/PublicApiAnalyzers/PublicApiAnalyzers.Help.md#nullable-reference-type-support Converted Microsoft.DotNet.Configurer.csproj to nullable. Realized the other projects that need nullable are massive, so putting this on the backburner.

# Conflicts:
#	src/Cli/Microsoft.DotNet.Cli.Utils/Microsoft.DotNet.Cli.Utils.csproj
#	src/Cli/Microsoft.DotNet.Cli.Utils/UILanguageOverride.cs
#	src/Cli/dotnet/dotnet.csproj
#	src/Common/WorkloadFileBasedInstall.cs
#	src/Containers/Microsoft.NET.Build.Containers/LocalDaemons/DockerCli.cs
#	src/Resolvers/Microsoft.DotNet.NativeWrapper/Microsoft.DotNet.NativeWrapper.csproj
#	src/Resolvers/Microsoft.NET.Sdk.WorkloadManifestReader/SdkDirectoryWorkloadManifestProvider.cs
#	src/Resolvers/Microsoft.NET.Sdk.WorkloadManifestReader/WorkloadInstallType.cs
#	src/Resolvers/Microsoft.NET.Sdk.WorkloadManifestReader/WorkloadResolver.cs
#	src/Tasks/Common/NuGetUtils.cs
#	src/WebSdk/Publish/Tasks/Microsoft.NET.Sdk.Publish.Tasks.csproj
#	src/WebSdk/Publish/Tasks/MsDeploy/CommonUtility.cs
#	src/WebSdk/Publish/Tasks/Tasks/MsDeploy/MSDeploy.cs
#	src/WebSdk/Publish/Tasks/Tasks/MsDeploy/VsMsdeploy.cs
#	src/WebSdk/Publish/Tasks/Tasks/WebJobs/GenerateRunCommandFile.cs
#	src/WebSdk/Publish/Tasks/Tasks/ZipDeploy/HttpClientHelpers.cs
#	src/WebSdk/Publish/Tasks/Tasks/ZipDeploy/HttpResponseMessageWrapper.cs
#	src/WebSdk/Publish/Tasks/WebJobsCommandGenerator.cs

…ccidental removal of nullable on the WorkloadManifestReader.