Add suport for export to .csv

[EhuddR]

Is your feature request related to a problem? Please describe. First of all, thanks for the plugin recently I've been using it instead of GNU Cash and it fulfills enough functionality to start having your accounts inside Obsidian. However, I am having a hard time trying to use the data entered in obsidian to a .csv format so I can create other types of charts.

Describe the solution you'd like I would like to be able to export Ledger data to .csv format.

Describe alternatives you've considered I have tried transcoding the data manually but this makes the pluggin unusable to fully migrate and actually increases the work I have to do to get and manipulate the information.

[AB1908]

You should be able to do this with some third party tools. Given that this uses ledger-cli's format, I'd start looking there.