Add notebook about time series by @gaborschulz

[ddotta]

Link to suggestion

https://dev.to/gaborschulz/time-series-analysis-with-polars-3dfg

Targeted section

Blog posts

Describe your suggestion

• Time series Analysis with Polars - A short blog post that explains how to deal with temporal datasets by @gaborschulz. Full helpful notebook available here.

Checklist

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