chore: rename DEVELOPMENT to CONTRIBUTING

[SethFalco]

Feel free to close this, but just a proposal.

Could the DEVELOPMENT.md file please be renamed to either CONTRIBUTING.md or HACKING.md? I actually missed it at first and was working on one until I noticed the DEVELOPMENT file. ^-^'

There likely are other projects that use the term DEVELOPMENT, but this is the first I've seen it. Meanwhile, CONTRIBUTING and HACKING are normalized across open-source projects and even platforms like GitHub, GitLab, etc.

To make your contributing guidelines visible in the repository's root directory, type CONTRIBUTING.

— https://docs.github.com/en/communities/setting-up-your-project-for-healthy-contributions/setting-guidelines-for-repository-contributors#adding-a-contributing-file

Here you can see GitHub recommends people to read it the first time they contribute, and it'll always be on the side when opening a PR under Helpful resources when named this way. At the moment it's not listed since GitHub doesn't recognize DEVELOPMENT.md as a resource for contributors.

Here you can see if GitLab finds a CONTRIBUTING.md file, it will add a badge to bring it to the users attention.

[kingdonb]

Thanks for pointing this out! It should be straightforward to merge this, let's take a look tomorrow when I'm fully awake 🤤