Added Menu to Gem Catalog with Action to Navigate to Gem Repo Screen (#4829)

* Added menu to Gem Catalog that with option to navigate to Gem Repo screen

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

* Changed Goto to GoTo and added a tr

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

* Gem repo button works from new project creation workflow as well and users are warned if they have pending changes in the gem catalog before changing screens.

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

Code/Tools/ProjectManager/Source/CreateProjectCtrl.cpp

@@ -49,6 +49,8 @@ namespace O3DE::ProjectManager
         m_stack->addWidget(m_gemCatalogScreen);
         vLayout->addWidget(m_stack);
 
+        connect(m_gemCatalogScreen, &ScreenWidget::ChangeScreenRequest, this, &CreateProjectCtrl::OnChangeScreenRequest);
+
         // When there are multiple project templates present, we re-gather the gems when changing the selected the project template.
         connect(m_newProjectSettingsScreen, &NewProjectSettingsScreen::OnTemplateSelectionChanged, this, [=](int oldIndex, [[maybe_unused]] int newIndex)
             {
@@ -133,7 +135,7 @@ namespace O3DE::ProjectManager
         }
         else
         {
-            emit GotoPreviousScreenRequest();
+            emit GoToPreviousScreenRequest();
         }
     }