Added a Warning When VS2019 is not Installed with Link to Download it (#2042)

* Added a warning when VS2019 is not installed with link to download it

Signed-off-by: nggieber <nggieber@amazon.com>

* Widden VSWarning dialog

Signed-off-by: nggieber <nggieber@amazon.com>

* Fix issue with checking for Visual Studio

Signed-off-by: nggieber <nggieber@amazon.com>

* PALify compiler detection

Signed-off-by: nggieber <nggieber@amazon.com>

* Changed windows compiler check to waitForFinished instead of waitForReadyRead

Signed-off-by: nggieber <nggieber@amazon.com>

Code/Tools/ProjectManager/Source/ProjectUtils.h

@@ -8,6 +8,7 @@
 
 #include <ScreenDefs.h>
 #include <QWidget>
+#include <AzCore/Outcome/Outcome.h>
 
 namespace O3DE::ProjectManager
 {
@@ -23,7 +24,8 @@ namespace O3DE::ProjectManager
 
         bool ReplaceFile(const QString& origFile, const QString& newFile, QWidget* parent = nullptr, bool interactive = true);
 
-        bool IsVS2019Installed();
+        bool FindSupportedCompiler(QWidget* parent = nullptr);
+        AZ::Outcome<void, QString> FindSupportedCompilerForPlatform();
 
         ProjectManagerScreen GetProjectManagerScreen(const QString& screen);
     } // namespace ProjectUtils