text: Title: update example notebooks
  Body: Main points:
  - [x] add `register_plotly_resampler` / `unregister_plotly_resampler`
    - [x] show `register_plotly_resampler` + `pd.options.plotting.backend` = 'plotly'
  - [x] show how `add_traces` can be used
  - [x] show how `add_trace` and `add_traces` can be used with dict_input 
  
  **to discuss**: maybe also add the hack that when the trace type is not specified with a dict input, that we assume a scatter**gl** will be used; instead of the default scatter behavior.