Fix global tool issues around exit code, command line parameters and path with spaces (PowerShell#10461)

Author: adityapatwardhan

src/Microsoft.PowerShell.GlobalTool.Shim/GlobalToolShim.cs

@@ -21,8 +21,9 @@ public class EntryPoint
         /// <summary>
         /// Entry point for the global tool.
         /// </summary>
-        /// <param name="args">Arguments passed to the global tool.</param>
-        public static void Main(string[] args)
+        /// <param name="args">Arguments passed to the global tool.</param>'
+        /// <returns>Exit code returned by pwsh.</returns>
+        public static int Main(string[] args)
         {
             var currentPath = new FileInfo(System.Reflection.Assembly.GetEntryAssembly().Location).Directory.FullName;
             var isWindows = RuntimeInformation.IsOSPlatform(OSPlatform.Windows);
@@ -31,11 +32,13 @@ public static void Main(string[] args)
 
             string argsString = args.Length > 0 ? string.Join(" ", args) : null;
             var pwshPath = Path.Combine(currentPath, platformFolder, PwshDllName);
-            string processArgs = string.IsNullOrEmpty(argsString) ? $"{pwshPath}" : $"{pwshPath} -c {argsString}";
+            string processArgs = string.IsNullOrEmpty(argsString) ? $"\"{pwshPath}\"" : $"\"{pwshPath}\" {argsString}";
 
             if (File.Exists(pwshPath))
             {
-                System.Diagnostics.Process.Start("dotnet", processArgs).WaitForExit();
+                var process = System.Diagnostics.Process.Start("dotnet", processArgs);
+                process.WaitForExit();
+                return process.ExitCode;
             }
             else
             {