document the fields for the settings.toml

[skewballfox]

An issue I ran in to running the code locally there was a field for taskwarrior provider missing from the example in the readme(the show_project field). while updating it there would be a good enough solution, it might be beneficial to specify the fields, their types and their defaults and what they are for.

An amazing example of this in another project is i3-status-rust

[maxjoehnk]

I agree. Documentation is currently kinda lacking anyway. Though in this particular case the config should still be read correctly anyway as any config changes should be backwards compatible with old configs. This one must've slipped through though.

Also while I agree that i3-status-rust has quite good documentation for the blocks I would like to have the documentation in a format which can also be shown inside of the app as we have the settings view which displays most of the properties of the config as well. Imo it would be a huge benefit if we could show the description of the fields in there as well.