Data formats 2022 (#235)

* content/data-formats: Major rewrite with new information

* content/data-formats: Removed some whitespaces

* extras/data-formats-comparison: Fixed a typo

* extras/data-formats-comparison: Redo tidy data benchmarks

* content/data-formats: Added benchmarks as csv tables

* content/data-formats: Add information on sparse matrices

* content/data-formats: Small fixes to data format names

Author: simo-tuomisto