Adds "how we work" section across READMEs

[arthurgousset]

Description

Adds "how we work" section in various READMEs.

Based on feedback from the Celo Foundation and external contributors, it's not clear how to reach us.

My goal with this PR is to be (particularly) explicit that we have a strong preference for GitHub.

My goal is to display this information on npmjs.org (for each package) and celo.docs.org, which is where most of our users interface with our products. I hypothesize that most folks don't know that celo-org/developer-tooling is where we work and encourage communication.

Tested

Docs-only changes

Related issues

N/A

Backwards compatibility

Yes, docs-only change

Documentation

Yes, docs change

[changeset-bot]

⚠️ No Changeset found

Latest commit: b473af7

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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[arthurgousset]

I forgot to run yarn run docs to auto-generate the new docs files. I hypothesise this made this CI step fail.

[arthurgousset]

Ready for review, all checks pass ✅