Move all crate attributes after the docs

[tguichaoua]

Objective

• Part of Guidelines for the crate level documentation : fixing the inconsistencies #9500
• Follow up of Crates documentations guideline #9558

Solution

• Move crate attributes after the crate docs.

[mockersf]

I think having the attributes first make more sense, as they are targeted at contributors who will be the ones opening the files. Doc is targeted at users who will most of the time view them through another mean than opening the file

[JoJoJet]

Whether the attributes go before or after the docs, we should at least stick to a consistent style. IIRC, it currently differs depending on the crate which is ugly and confusing.

[richchurcher]

I'd be happy to clean this one up, but I guess we might need more of a consensus? I reckon the point @mockersf makes is pretty valid (documentation in source files is for generators and tooling, not for ease of reading).

Could also close out #9558 if we can get some agreement?

[tguichaoua]

I reckon the point @mockersf makes is pretty valid (documentation in source files is for generators and tooling, not for ease of reading).

I think with time I finally agree with this point. I'll close this PR and let you handle this.