add a as_aoi parameter in the add_layer method

[12rambau]

• Can we add "as_aoi" (or "with_zoom") parameter to the "add_layer/addLayer" method? if the aoi_control is not on the map, we can create it, and if it is, just add layer_name + bounds?
• Also, if an aoi_layer (or "with_zoom" layer) is removed from the map, can we remove it from the control (without an extra call).

Perhaps we can have a Dict trait in the map ({name:[bounds]}), overwritten every time a new "as_aoi" layer is added, and an Aoi Control, listening every time to add/remove layers "as_aoi"

Originally posted by @dfguerrerom in #491 (review)

Excellent suggestion that completely deserve it's own issue as it leads to many method tuning (add_layer, remove_layer, aoi_control... etc)

The full list of layers that need to be supported:

• Tile Layer
• Local Tile Layer
• Magnifying Glass
• Marker
• Icon
• AwesomeIcon
• DivIcon
• Popup
• WMS Layer
• Image overlay and Video overlay
• AntPath
• Polyline
• Polygon/Multipolygon
• Rectangle
• Circle
• Circle Marker
• Marker Cluster
• Heatmap
• Velocity
• Layer Group
• GeoJSON
• GeoData
• Choropleth
• Vector Tile Layer
• WKTLayer
• eeLayer