Update Alert Notebook

- Update the introduction in the instructions.
- Utilise the updated `MicrogridConfig` class to simplify the toml
  file loading.
- Utilise the new `state_analysis` module for detecting and analysing
  component state transitions and alerts from reporting data. This
  simplifies the notebook by removing a now obsolete code.

Signed-off-by: cyiallou - Costas <[email protected]>

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Author: cyiallou