[REG-1579] add initial Automated Testing package docs

[analogrelay]

This is an initial draft of the "one-pager" Getting Started doc for the automated testing package (I think "Monkey Testing" is a little too obscure a name for this, so I was focusing on "Automated Testing" as an alternate).

TODO:

• [x] Merge a PR to RegressionGames.Unity.Testing with a few small UI improvements I made while walking through this process (REG-1587) - This doesn't have to be done before we merge this, but the docs will refer to things I've already fixed in my branch :). https://github.com/Regression-Games/RegressionGames.Unity.Testing/pull/6
• [x] Add screenshots
• [x] Add GIF recording of Monkey bot
• [ ] Release a v0.0.1 tag of the RegressionGames.Unity.Testing package on public GitHub. - This also doesn't have to be done before merge but the docs will refer to it as if it exists.

---

Find the pull request instructions here

Every reviewer and the owner of the PR should consider these points in their request (feel free to copy this checklist so you can fill it out yourself in the overall PR comment)

• [ ] The code is extensible and backward compatible
• [ ] New public interfaces are extensible and open to backward compatibility in the future
• [ ] If preparing to remove a field in the future (i.e. this PR removes an argument), the argument stays but is no longer functional, and attaches a deprecation warning. A linear task is also created to track this deletion task.
• [ ] Non-critical or potentially modifiable arguments are optional
• [ ] Breaking changes and the approach to handling them have been verified with the team (in the Linear task, design doc, or PR itself)
• [ ] The code is easy to read
• [ ] Unit tests are added for expected and edge cases
• [ ] Integration tests are added for expected and edge cases
• [ ] Functions and classes are documented
• [ ] Migrations for both up and down operations are completed
• [ ] A documentation PR is created and being reviewed for anything in this PR that requires knowledge to use
• [ ] Implications on other dependent code (i.e. sample games and sample bots) is considered, mentioned, and properly handled
• [ ] Style changes and other non-blocking changes are marked as non-blocking from reviewers

[analogrelay]

Also, I notice that the logo is still not working on the overlay?

Fixed if you use the ashley/reg-1596 branch (see https://github.com/Regression-Games/RegressionGames.Unity.Testing/pull/8)

[analogrelay]

PR Feedback addressed! Taking this out of draft as the remaining work is to record a GIF of the bot and I don't want to block people reviewing the doc on just that. I'll work on that right after lunch though.

[analogrelay]

And now the GIF recording is in place!

[analogrelay]

Just cleaning up the addressed comments, I believe there are some that are still waiting to be addressed?

I thought I got them all, but feel free to let me know if I missed something!