Add emoji to README file

[jayhack]

# Motivation

This change was made at the user's request to add an emoji to the top of the `README.md` file.

# Content

A robot emoji (🤖) has been added to the very first line of the `README.md` file, followed by a new line.

# Testing

The change was verified by directly inspecting the `README.md` file content.

# Please check the following before marking your PR as ready for review

- [ ] I have added tests for my changes
- [ ] I have updated the documentation or added new documentation as needed

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

✅ All tests successful. No failed tests found.

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