In the default Cargo.toml template provide help for completing the metadata

[kornelski]

Currently cargo new generates Cargo.toml with absolutely minimal set of fields.

It's left up to users to discover and learn about other Cargo.toml fields. I think it could be improved, for example:

• Insert comments with hints or links, e.g.
  # See more https://doc.rust-lang.org/cargo/reference/manifest.html

• Insert some fields with default or empty values, e.g. categories = [] # https://crates.io/category_slugs. That would show users that this field exists, and prompt them to complete it. The category field in particular is often missing, and that reduces usefulness of browsing https://crates.io/categories

[k-nasa]

I think this is wonderful 😄

[k-nasa]

May I work on this?

[kornelski]

I don't mind :)

[k-nasa]

Thank you!