feat: Add show_error flag to display error in cell output

[bijanvakili]

For #9370

This is a smaller-scoped fix to propagate Javascript errors so that they are immediately visible in a python notebook.
The intent is to make it easier to iterate on errors or collect information for bugs.

Background

This is a short term fix for issue #9370 until the refactor suggested in #9064 is completed.

Change List

• Add new onError handler to determine whether to show a deck.gl error in the HTML output or via the browser console
• Optionally hook the Deck.onError handler and the createDeck exception handler catch block to call the new onError handler.
• Add show_error boolean flag to instruct pydeck.Deck to display the error immediately instead of logging it to the developer console

NOTE: This does not raise a python exception from Deck.to_html(). The method still considers its execution as succeeded.

When show_error is True, the resulting output should look similar to the following screenshot:

[coveralls]

coverage: 91.607% (-0.02%) from 91.63%
when pulling 3c05c80 on bijanvakili:issue-9370-display-text
into 8721dfd on visgl:master.