Implement core user interface

[simonrolph]

Dependency on #5

Likely as a Shiny app

Hosting:

• Within BioDT generic shiny app - or hosted separately eg. on UKCEH posit shiny connect or datalabs

Map layers:

• Base map? OSM?
• Overall cultural ecosystem service layer
• Biodiversity layers
• Biodiversity model uncertainty layers
• Recreation potential layer
• Relevant access features from OSM eg. carparks, roads, footpaths etc.

Plots:

• Species activity graphs

Controls:

• which species to show
• Hard/soft recreationalist
• Month
• Time of day

Data:

• Where does it load data from? eg. recently rerun biodiversity models
• Use of cloud optimised geotiffs? https://www.cogeo.org/