Save multiple projects selected by the user for adding into the dashboard before the user saves it as a workspace

[JoshwinThomasIBM]

if the user adds a project into the dashboard without saving as workspace and he continues to add or remove project into the liberty dashboard and only saves the the session as a workspace as the last step then , post saving and when the workspace is loaded again the projects added on the dashboard is found missing.

Currently we are saving the selected project by the user into the global state and prompts the user to save the workspace. if the user opts not to save, then we remove the selected project from the global state.

Instead of handling a single project at a time , we need to use an array / set for handling multiple projects and update the array / set based on user adding or removing the project from the dashboard and once user saves the session as a workspace the changes made by the user in the dashboard must reflect once the saved workspace is reloaded

[JoshwinThomasIBM]

Reference for this enhancement suggestion is here