chore: add rationale codeowner + improv contrib (#49)

# Pull request template

<!--

For Work In Progress Pull Requests, please use the Draft PR feature, see
https://github.blog/2019-02-14-introducing-draft-pull-requests/ for
further
details.

NOTE: Pull Requests from forked repositories will need to be reviewed by
a
Team member before any CI builds will run.

-->

## Before submitting a pull request (check all applicable)

- [x] Read the [Contributing Guide](./github/CONTRIBUTING.md) (required)
- [x] Read the [Code Of Conduct](/CODE_OF_CONDUCT.md) (required)
- [ ] Include tests for your changes (if necessary)
- [x] `pre-commit run --all-files` returns no issues (required)
- [x] Spell-check with `cargo spellcheck check` (required)
- [ ] Update the `spellcheck.dic` (if necessary)
- [ ] Update any related documentation and include any relevant
screenshots
- [x] Use [Conventional
Commits](https://www.conventionalcommits.org/en/v1.0.0/) (required)

## Pull request type (check all applicable)

- [ ] Refactor
- [ ] Feature
- [ ] Bug Fix
- [ ] Optimization
- [x] Documentation

## Description

adding new docs and improving contribution

### Motivation

### Solution

### Additional context

## Related Tickets & Documents

<!--

For pull requests that relate or close an issue, please include them
below.  We like to follow [GitHub's guidance on linking issues to pull

requests](https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue).

-->

- Related discussion #
- Related issue #
- Closes issue #

## Instructions, screenshots, recordings

_Please replace this line with instructions on how to test your changes.
A note
on the devices and systems this has been tested on, as well as any
relevant
images for UI changes._

### Accessibility checklist

_If your PR includes UI changes, please use this checklist:_

- [ ] Keyboard operability supported?
- [ ] Color contrast tested?

## Added/updated tests

_We encourage you to keep the code coverage percentage at 80% and
above._

- [ ] Yes
- [ ] No, and this is why: not necessary
- [ ] I need help with writing tests

Signed-off-by: gacallea <3269984+gacallea@users.noreply.github.com>