Let work directory can be empty

Author: Jack251970

Flow.Launcher.Plugin/Interfaces/IPublicAPI.cs

@@ -591,6 +591,6 @@ public interface IPublicAPI
         /// <param name="workingDirectory">Working directory. If not specified, the current directory will be used</param>
         /// <param name="arguments">Optional arguments to pass to the process. If not specified, no arguments will be passed</param>
         /// <param name="runAsAdmin">Whether to run the process as administrator</param>
-        public void StartProcess(string filePath, string workingDirectory, string arguments = "", bool runAsAdmin = false);
+        public void StartProcess(string filePath, string workingDirectory = "", string arguments = "", bool runAsAdmin = false);
     }
 }

Flow.Launcher/PublicAPIInstance.cs

@@ -577,7 +577,7 @@ public long StopwatchLogInfo(string className, string message, Action action, [C
         public Task<long> StopwatchLogInfoAsync(string className, string message, Func<Task> action, [CallerMemberName] string methodName = "") =>
             Stopwatch.InfoAsync(className, message, action, methodName);
 
-        public void StartProcess(string filePath, string workingDirectory, string arguments = "", bool runAsAdmin = false)
+        public void StartProcess(string filePath, string workingDirectory = "", string arguments = "", bool runAsAdmin = false)
         {
             try
             {