Try to update shiny example

Author: kylebarron

examples/shiny/app.py

@@ -0,0 +1,28 @@
+from shiny.express import ui
+from shinywidgets import render_widget
+
+from lonboard import Map
+
+colors = {
+    "Red": [200, 0, 0],
+    "Green": [0, 200, 0],
+    "Blue": [0, 0, 200],
+}
+
+ui.input_select("color_select", "Color", choices=list(colors.keys()))
+
+
+# @render_widget
+# def layer():
+#     gdf = gpd.read_file(gpd.datasets.get_path("naturalearth_cities"))
+#     return ScatterplotLayer.from_geopandas(gdf, radius_min_pixels=2)
+
+
+@render_widget
+def map():
+    return Map([])
+
+
+# @reactive.effect
+# def set_fill_color():
+#     layer.widget.get_fill_color = colors[input.color_select()]