Moved the Commands strings into a new LocalizableStrings.resx in the Commands folder. Fixed namespaces for various files that were never correctly adjusted. Fixed various license headers. Fixed various using statements.

Author: MiYanni

src/Cli/dotnet/Commands/Add/AddCommandParser.cs

@@ -5,7 +5,6 @@
 using Microsoft.DotNet.Cli.Commands.Add.Package;
 using Microsoft.DotNet.Cli.Commands.Add.Reference;
 using Microsoft.DotNet.Cli.Extensions;
-using LocalizableStrings = Microsoft.DotNet.Tools.Add.LocalizableStrings;
 
 namespace Microsoft.DotNet.Cli.Commands.Add;
 

src/Cli/dotnet/Commands/Add/LocalizableStrings.resx

@@ -5,7 +5,6 @@
 using Microsoft.DotNet.Cli.Commands.Package;
 using Microsoft.DotNet.Cli.Commands.Package.Add;
 using Microsoft.DotNet.Cli.Extensions;
-using LocalizableStrings = Microsoft.DotNet.Tools.Package.Add.LocalizableStrings;
 
 namespace Microsoft.DotNet.Cli.Commands.Add.Package;
 

src/Cli/dotnet/Commands/Add/Package/AddPackageParser.cs

@@ -4,7 +4,6 @@
 using System.CommandLine;
 using Microsoft.DotNet.Cli.Commands.Reference;
 using Microsoft.DotNet.Cli.Commands.Reference.Add;
-using LocalizableStrings = Microsoft.DotNet.Tools.Reference.Add.LocalizableStrings;
 
 namespace Microsoft.DotNet.Cli.Commands.Add.Reference;
 

src/Cli/dotnet/Commands/Add/Reference/AddProjectToProjectReferenceParser.cs

@@ -4,7 +4,6 @@
 using System.CommandLine;
 using Microsoft.DotNet.Cli.Commands.Restore;
 using Microsoft.DotNet.Cli.Extensions;
-using LocalizableStrings = Microsoft.DotNet.Tools.Build.LocalizableStrings;
 
 namespace Microsoft.DotNet.Cli.Commands.Build;