Extract localizable strings from dotnet-publish (#4801)

* Extract localizable strings from dotnet-publish

* Added $ to interpolated strings

* Update Program.cs

src/dotnet/commands/dotnet-publish/LocalizableStrings.cs

@@ -0,0 +1,33 @@
+namespace Microsoft.DotNet.Tools.Publish
+{
+    internal class LocalizableStrings
+    {
+        public const string AppFullName = ".NET Publisher";
+
+        public const string AppDescription = "Publisher for the .NET Platform";
+
+        public const string ProjectArgument = "PROJECT";
+
+        public const string ProjectArgDescription = "The MSBuild project file to publish. If a project file is not specified, MSBuild searches the current working directory for a file that has a file extension that ends in `proj` and uses that file.";
+
+        public const string FrameworkOption = "FRAMEWORK";
+
+        public const string FrameworkOptionDescription = "Target framework to publish for";
+
+        public const string RuntimeOption = "RUNTIME_IDENTIFIER";
+
+        public const string RuntimeOptionDescription = "Target runtime to publish for. The default is to publish a portable application.";
+
+        public const string OutputOption = "OUTPUT_DIR";
+
+        public const string OutputOptionDescription = "Path in which to publish the app";
+
+        public const string ConfigurationOption = "CONFIGURATION";
+
+        public const string ConfigurationOptionDescription = "Configuration under which to build";
+
+        public const string VersionSuffixOption = "VERSION_SUFFIX";
+
+        public const string VersionSuffixOptionDescription = "Defines the value for the $(VersionSuffix) property in the project";
+    }
+}