[FX-NULL] Update contribution process

[sashuk]

Description

This pull request updates contribution process according to the latest changes.

All development checks should be done and set checked to pass the
GitHub Bot: TODOLess action

PR commands

List of available commands:

• @toptal-bot run package:alpha-release - Release alpha version
• @toptal-anvil ping reviewers - Ping FX team for review

PR Review Guidelines

When to approve? ✅

You are OK with merging this PR and

1. You have no extra requests.
2. You have optional requests.
   1. Add nit: to your comment. (ex. nit: I'd rename this variable from makeCircle to getCircle)

When to request changes? ❌

You are not OK with merging this PR because

1. Something is broken after the changes.
2. Acceptance criteria is not reached.
3. Code is dirty.

When to comment (neither ✅ nor ❌)

You want your comments to be addressed before merging this PR in cases like:

1. There are leftovers like unnecessary logs, comments, etc.
2. You have an opinionated comment regarding the code that requires a discussion.
3. You have questions.

How to handle the comments?

1. An owner of a comment is the only one who can resolve it.
2. An owner of a comment must resolve it when it's addressed.
3. A PR owner must reply with ✅ when a comment is addressed.

[changeset-bot]

⚠️ No Changeset found

Latest commit: e84d233

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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