Add new features and updates to dibujar.py and pygwalker_visualizaciones.py

- Introduced a new markdown cell in dibujar.py to enhance user guidance for drawing with the mouse.
- Updated the version in pygwalker_visualizaciones.py from 0.15.1 to 0.15.2.
- Added a new markdown cell in pygwalker_visualizaciones.py for interactive EDA with PyGWalker.
- Refactored return values in pygwalker_visualizaciones.py to streamline data handling.
- Modified Graficos_plotly.grid.json to include additional layout positions.

dibujar.py

@@ -10,6 +10,12 @@ def _():
     return (mo,)
 
 
+@app.cell
+def _(mo):
+    mo.md(r"""  # Dibujar: Dibujar con el raton y recibir la imagen""")
+    return
+
+
 @app.cell
 def _():
     from modraw import Draw