CSV export format improvement

[headyj]

Is your feature request related to a problem? Please describe.
Currently the CSV export can hardly by used for calculation, as the values are "polluted" with Mi, m, -> or ? characters

Describe the solution you'd like
It would be very useful to have a CSV export with values that can be used for calculation in a spreadsheet, like for the json export.

Describe alternatives you've considered
Actually the only way I found is to take the JSON as input and do my own CSV with tools like jq, but it's not very convenient

[aantn]

Hi, this makes sense and we are open to a PR that would fix this. The relevant code is in robusta_krr/formatters/csv.py