Add Clone and Copy derives

[fredszaq]

Resolves #439

Synopsis

This adds 2 new derives for Clone and Copy. Those won't put any additionnal contraints on generic types by default, but provide #[clone(bound(...))] and #[copy(bound(...))] attributes if you need a fine tune the bounds

Solution

I moved the Bounds attribute from the fmt module to utils and reused it for both Derives

Checklist

• Documentation is updated (if required)
• Tests are added/updated (if required)
• CHANGELOG entry is added (if required)

[fredszaq]

merged master into this to address the conflict in cargo.toml