Improve support for adding GEE layers

[giswqs]

import leafmap.maplibregl as leafmap
m = leafmap.Map(center=[-100, 40], zoom=3, style="3d-terrain-background")
m.add_ee_layer(asset_id="ESA/WorldCover/v200")
m.add_legend(builtin_legend="ESA_WorldCover")
m.add_layer_control()
m

[github-actions]

🚀 Deployed on https://667f9a1e7bad59e22bf899e3--opengeos.netlify.app

[giswqs]

import leafmap.maplibregl as leafmap
m = leafmap.Map(
    center=[-120.4482, 38.0399], zoom=13, pitch=60, bearing=30, style="3d-terrain"
)
m.add_ee_layer(asset_id="ESA/WorldCover/v200", opacity=0.5)
m.add_legend(builtin_legend="ESA_WorldCover", title="ESA Landcover")
m.add_layer_control()
m