UX Updates and Save Prompt

I've updated the UI and UX. You can now pop windows out by clicking the purple on the manager tab. In this window, you can still use number hot keys to access the other managers. Esc to exit or click the red X.

I've already updated the asset manager to add folders and sub folders for better organization. 

Lastly, I've added a Save warning prompt so that if you try to exit the app or go to the project hub, you will be prompted to save, not save, or cancel.

Got that done a lot sooner than I thought. Hope this helps with workflow. Again, if you have any issues or suggestions, please feel free to let me know! 

-Memento_Morii <3