Project Manager Support Add Existing Projects, Removing, Copying, and Deleting (#961)

* Add Add/RemoveProject to Python Bindings

* Support Project, Add, Remove, Copy, Delete

* Open parent directory when duplicating to discourage path in owning dir

* Remove extra connects for new projects button

* Center project image

Code/Tools/ProjectManager/Source/PythonBindingsInterface.h

@@ -88,6 +88,20 @@ namespace O3DE::ProjectManager
          * @return an outcome with ProjectInfos on success 
          */
         virtual AZ::Outcome<QVector<ProjectInfo>> GetProjects() = 0;
+        
+        /**
+         * Adds existing project on disk
+         * @param path the absolute path to the project
+         * @return true on success, false on failure
+         */
+        virtual bool AddProject(const QString& path) = 0;
+
+        /**
+         * Adds existing project on disk
+         * @param path the absolute path to the project
+         * @return true on success, false on failure
+         */
+        virtual bool RemoveProject(const QString& path) = 0;
 
         /**
          * Update a project