File>open folder messaging in non chrome based browsers

[abose]

For browsers that do not support the fs access APIs, https://web.dev/file-system-access/ , we should activate the following dialogues when a user tries to open a file or folder.

To Open project folders in your system, use Google Chrome/ Microsoft Edge/ Opera Browser. Firefox currently only supports the default project.

Hint

• Check if Window.showDirectoryPicker API is available. If not, we should show the message when a folder open command is issued.

[abose]

Fixed. Closing.