Fix misc bugs w/ IDE build in folders with a space

- Add quotes to bin/msbuild.bat paths
- Tweak PostBuildCmds in Debugger64 and IDEHelper
- Tweak Debug paths in IDE project to be relative to Workspace
- Modify AppendWithOptionalQuotes to not add more quotes if source string already in quotes
- Modify quoting behavior in build shell command construction

IDE/BeefProj.toml

@@ -24,8 +24,8 @@ OtherLinkFlags = ""
 TargetDirectory = "$(WorkspaceDir)/dist"
 TargetName = "BeefIDE_d"
 OtherLinkFlags = "$(LinkFlags) Comdlg32.lib kernel32.lib user32.lib advapi32.lib shell32.lib IDEHelper64_d.lib"
-DebugCommandArguments = "-proddir=C:\\Beef\\IDEHelper\\Tests"
-DebugWorkingDirectory = "c:\\Beef"
+DebugCommandArguments = "-proddir=\"$(WorkspaceDir)\\..\\IDEHelper\\Tests\""
+DebugWorkingDirectory = "$(WorkspaceDir)\\.."
 EnvironmentVars = ["_NO_DEBUG_HEAP=1"]
 
 [Configs.Release.Win32]

IDE/src/IDEApp.bf

@@ -7801,10 +7801,13 @@ namespace IDE
 			else if (runFlags.HasFlag(.ShellCommand))
 			{
 				String shellArgs = scope .();
+				shellArgs.Append("/s ");
 				shellArgs.Append("/c ");
+				shellArgs.Append("\"");
 				IDEUtils.AppendWithOptionalQuotes(shellArgs, fileName);
 				shellArgs.Append(" ");
 				shellArgs.Append(args);
+				shellArgs.Append("\"");
 				startInfo.SetFileName("cmd.exe");
 				startInfo.SetArguments(shellArgs);
 			}

IDE/src/IDEUtils.bf

@@ -19,10 +19,13 @@ namespace IDE
 
 		public static void AppendWithOptionalQuotes(String targetStr, String srcFileName)
 		{
-		    if (!srcFileName.Contains(' '))
-			    targetStr.Append(srcFileName);
-			else
+			bool hasSpace = srcFileName.Contains(' ');
+			bool alreadyQuoted = (srcFileName.Length > 0 && srcFileName[0] == '"' && srcFileName[srcFileName.Length - 1] == '"');
+
+			if (hasSpace && !alreadyQuoted)
 				targetStr.Append("\"", srcFileName, "\"");
+			else
+			    targetStr.Append(srcFileName);
 		}
 
         public static bool FixFilePath(String filePath, char8 wantSlash, char8 otherSlash)