Build as Self Contained and Selfhost CefSharp SubProcess (#693)

* Added self contained parameter to builds

* Remove dotnet install from installer

* Fixed missing SubProcessExe

* Self hot browser subprocess

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Co-authored-by: Natsumi <cmcooper123@hotmail.com>

Dotnet/Program.cs

@@ -126,6 +126,7 @@ namespace VRCX
 
         private static void Run()
         {
+            BrowserSubprocess.Start();
             Update.Check();
             StartupArgs.ArgsCheck();
             GetVersion();