Update package.json for all turf packages

[protokoul]

This PR updates the description in package.json for all the turf packages. Almost all of the descriptions have been referenced from the API docs that can be found at https://turfjs.org. I could not find description for four packages in the API docs. These are turf-invariant, turf-projection, turf-meta, and turf-distance-weight.

• Meaningful title, including the name of the package being modified.
• Summary of the changes.
• Heads up if this is a breaking change.
• Any issues this resolves.
• Inclusion of your details in the contributors field of package.json - you've earned it! 👏
• Confirmation you've read the steps for preparing a pull request.

Resolves #2798

[smallsaucepan]

Thanks for doing this @protokoul. Noted a couple of descriptions that we could probably make shorter, or leave out some of the detail. If a potential user likes what they see, they can always click through to the README for specifics.

For example, we can just say polygon or geometry instead of listing (Multi)Polygon specifically. If you wouldn't mind, could you please scan through to see if there are any other opportunities to trim out some detail. Then we can go ahead and merge them in!