fix: 修复函数可见性问题[skip ci]

src/MaaWpfGui/Main/CopilotViewModel.cs

@@ -442,7 +442,7 @@ namespace MaaWpfGui
         /// <summary>
         /// Starts copilot.
         /// </summary>
-        private async void Start()
+        public async void Start()
         {
             /*
             if (_form)
@@ -490,7 +490,7 @@ namespace MaaWpfGui
         /// <summary>
         /// Stops copilot.
         /// </summary>
-        private void Stop()
+        public void Stop()
         {
             _asstProxy.AsstStop();
             Idle = true;

src/MaaWpfGui/Main/DepotViewModel.cs

@@ -154,7 +154,7 @@ namespace MaaWpfGui
         /// <summary>
         /// Starts depot recognition.
         /// </summary>
-        private async void Start()
+        public async void Start()
         {
             string errMsg = string.Empty;
             DepotInfo = Localization.GetString("ConnectingToEmulator");

src/MaaWpfGui/Main/RecruitViewModel.cs

@@ -164,7 +164,7 @@ namespace MaaWpfGui
         /// <summary>
         /// Starts calculation.
         /// </summary>
-        private async void StartCalc()
+        public async void StartCalc()
         {
             string errMsg = string.Empty;
             RecruitInfo = Localization.GetString("ConnectingToEmulator");