reduce repetition by adding keychain functions to config struct

[jhheider]

matter of taste. discard if not wanted.

[mxcl]

I dislike having the Config object not be a 1:1 mapping of the TOML and prefer the explicit fetch of sensitive data being clear. Though am not opposed to cleaning up the codebase in general, it's messy because I am over 40 and not OCD about code cleanliness anymore lol

[jhheider]

Yes, it's all a matter of taste. In general, I like to implement actions as methods on their data, which is what this does. Still, perfectly easy and far from unheard of to have non-method functions. There's always the option of using a struct other than config to hold the in-memory representation.