Add command to view item details

[lvps]

Similar to #24, query the API and get item details: location, features, and so on. Return everything to the user. Could be named /item.

• [ ] convert values to human readable (copy code from tarallo, JS or PHP)
• [ ] add it to help
• [ ] translate keys to human readable
• [ ] add inline buttons or links or something to view inner items
• [ ] make a separate command/parameter to use summary

[lvps]

Depends on https://github.com/WEEE-Open/tarallo/issues/137