add function to comp residuals and estimate ep durarion

[eduardocorrearaujo]

Changes to solve issue #9.

Please review the new function comp_duration to see if it can be optimized.

Also, now, to run the class it is necessary to provide the muninames as a dict, so it's necessary to have the 'muni_br.gpkg' where the code is running, I did not find this folder.

[fccoelho]

@esloch could you have a look as well please?

[esloch]

Also, now, to run the class it is necessary to provide the muninames as a dict, so it's necessary to have the 'muni_br.gpkg' where the code is running, I did not find this folder.

Hi @eduardocorrearaujo. You can locate the file in the following directory:
https://github.com/AlertaDengue/episcanner-downloader/blob/main/epi_scanner/data/muni_br.gpkg

Please review the new function comp_duration to see if it can be optimized.

Suggestion:
It would be beneficial to write small unit tests to validate the implementations.

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Please, remember to add the package to pyproject.toml using poetry add epiweek.

I have your working branch; I'll also be validating the function once you add the dictionary so I can check the data generation.