Add a widget default position setting

We need to add a setting, probably on a project, that allows the user to choose where the widget is positioned by default for the site, or maybe it goes in the global workspace settings. I don't know. Either way, we have to be able to change that because sometimes sites have a chat widget in the bottom-right corner. We might want to default our widget to the middle side of the page, the bottom middle, or the bottom left, so we need to make settings for that.