Add skeleton functions

Author: stfnkth

src/openlayers/express.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+from typing import Self
 from .abstracts import LayerLike
 from .map import Map
 from .models.layers import VectorLayer, WebGLVectorLayer, WebGLTileLayer, TileLayer
@@ -65,6 +66,10 @@ def __init__(
     def model(self) -> WebGLVectorLayer | VectorLayer:
         return self._model
 
+    def set_icon_style(self) -> Self:
+        # TODO: implement
+        return self
+
     def to_map(
         self, lon: float = 0, lat: float = 0, zoom: float | int = 0, **kwargs
     ) -> Map | MapWidget:

src/openlayers/geopandas.py

@@ -105,6 +105,10 @@ def color_category(self, column: str) -> Self:
         return self
 
 
+    def icon(self, icon_src: str, icon_scale: float = 1, **kwargs) -> Self:
+        # TODO: implement 
+        return self
+
 @pd.api.extensions.register_dataframe_accessor("openlayers")
 class OpenLayersAccessor(OLAccessor): ...