feat: download and convert Matomo events data for scanbot

[stephanegigandet]

API calls for products scans from the new Smoothie app cannot be reliably identified from the backend nginx logs (user agent is dart:io and there's no indication if it's from our app, and from a scan action). We do have some event data in Matomo for users who opted in to send metrics, so we can use this data and feed it to scanbot.pl to populate popularity of products.

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

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[codecov-commenter]

Codecov Report

Merging #8081 (e56e16e) into main (aa9404d) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #8081   +/-   ##
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  Coverage   44.72%   44.72%           
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  Files         100      100           
  Lines       20220    20220           
  Branches     4637     4637           
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  Hits         9043     9043           
  Misses      10103    10103           
  Partials     1074     1074           

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[alexgarel]

Great :-)