feat: Create CODEOWNERS file and update contributing.md

[barriebyron]

Description

Instead of asking our contributors to manually assign reviewers when they create a PR, let's use the CODEOWNERS file to automatically do this step. I've added myself as a docs reviewer (happy to help if I can, let's see how this goes)

Tasks

• [ ]

References

---

Before we can merge this PR, please make sure that all the following items have been
checked off. If any of the checklist items are not applicable, please leave them but
write a little note why.

• Appropriate labels applied
• Targeted PR against correct branch
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Code follows the module structure standards.
• Wrote unit and integration
• Updated relevant documentation (docs/) or specification (x/<module>/spec/)
• Added relevant godoc comments.
• Re-reviewed Files changed in the Github PR explorer
• Review Codecov Report in the comment section below once CI passes

[jaybxyz]

@barriebyron CODEOWNDERS and CONTRIBUTING.md look good to me. However, this PR has the same commits as #188. Did you start this based off edit-farming-spec branch?

[barriebyron]

@barriebyron CODEOWNDERS and CONTRIBUTING.md look good to me. However, this PR has the same commits as #188. Did you start this based off edit-farming-spec branch?

(hanging head in shame) yes I did... bad thing. Okay, I got the unintended changes out of this PR. (whew)
I need to quit working when my eyes and brain are tired. thank you for noticing and understanding that's what I did.

[jaybxyz]

@barriebyron Thanks for resolving the unintended changes. Now this PR has two files changed. It looks like Markdown links checker found 1 dead link in ./docs/Explanation/ADR/README.md. We should resolve this before merging this PR.

[jaybxyz]

I go to the link and the site seems to be live and there seems to be no issue. I assume either Markdown links checker was not properly checking links at the time you pushed your commit or the site was down for a moment when it checked. Let's merge this after a review from @dongsam for this PR. We need to do "Squash and Merge" this since it has lousy commits.

[dongsam]

LGTM! Thanks, I just force-pushed with resolving codecov fail by branch conflict