Tabs support

[voltcode]

It would be awesome, if the library supported creating tabs as an option when putting one window over another. An example would be how visual studio docking works.

Usually it works that way:

• you drag a window over another
• in the middle of the window in the background, a set of icons shows up
• there is one icon per direction where the new window should be (top, bottom,...)
• fitfth, middle icon is to create a tab - the new and existing window form a tabbed layout

[nelsieborja]

Maybe you would want to try these:

Not React but can be used with it: golden-layout
Less popular but React and does the job: FlexLayout, rc-dock