Add banner image and update badges

Co-authored-by: olaf-s-app[bot] <259723076+olaf-s-app[bot]@users.noreply.github.com>

Author: awlevin

README.md

@@ -1,8 +1,10 @@
-# Python CLI Template
+![Python CLI Template banner](https://raw.githubusercontent.com/Olafs-World/python-cli-template/main/banner.png)
 
 [![CI](https://github.com/Olafs-World/python-cli-template/actions/workflows/ci.yml/badge.svg)](https://github.com/Olafs-World/python-cli-template/actions/workflows/ci.yml)
-[![PyPI](https://img.shields.io/pypi/v/my-tool.svg)](https://pypi.org/project/my-tool/)
-[![Python](https://img.shields.io/pypi/pyversions/my-tool.svg)](https://pypi.org/project/my-tool/)
+[![Python 3.10+](https://img.shields.io/badge/python-3.10+-blue.svg)](https://www.python.org/downloads/)
+[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
+
+# Python CLI Template
 
 A template for creating Python CLI tools that publish to PyPI and ClawHub.