Cache a result of checking updates

[qzb]

When klio runs a command it checks for its updates in the background. Since this operation can slow down command execution, we should cache its result for some time (let's say 24 hours).

[bkielbasa]

where the cache should be stored?

[qzb]

I was thinking about using ~/.klio/registries.json as default, and fallback to <project_dir>/.klio/registries.json if "global" directory is not writable. This file would contain data of all used registries + last update time for each of them.

[crazybarber]

I would add global option that switches off checking for update. I mean if you don't need it then just explicitly say it. Is there any reason why it may need to be implicit?