Dp-mobility-report

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* Enhanced documentation for all properties of `DpMobilityReport` class

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* fix bug: prevent error "key `trips` not found" in `trips_over_time` if sum of `trip_count` is 0

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* make tessellation an Optional parameter
* allow DataFrames without timestamps but sequence numbering instead (i.e., `integer` for `timestamp` column)
* allow to set seed for reproducible sampling of the dataset (according to `max_trips_per_user`)

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* Fixes addressing deprecation warnings.

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* parameter for a custom split of the privacy budget between different analyses
* extend 'analysis_selection' to include single analyses instead of entire segments
* parameter for 'analysis_exclusion' instead of selection
* bug fix: include all possible categories for days and hour of days
* bug fix: show correct percentage of outliers
* show 95% confidence-interval instead of upper and lower bound
* show privacy budget and confidence interval for each analysis

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* Remove scaling of counts to match a consistent trip_count / record_count (from ds_statistics) in visits_per_tile, visits_per_time_tile and od_flows. Scaling was implemented to keep the report consistent, though it is removed for now as it introduces new issues.
* Minor bug fixes in the visualization: outliers were not correctly converted into percentage.