Add a layer pop-up dialog for choose map layer and show the data layer

[nmhung00]

trafficstars

#936

Adding some initial UI to the map container to allow users to select map type and also show the data layers of the selected project.

Next step: add some marker next to to layer name and address whatever UI feedbacks that come up during initial version.

Screenshot:

@gino-m PTAL?

[gino-m]

@nmhung00 Gentle ping

[nmhung00]

/gcbrun

[nmhung00]

/gcbrun

[gino-m]

Let's revisit this once we have UX designs.