🎨 Add Codacy badges (#16)

Author: ff137

README.md

@@ -2,6 +2,8 @@
 
 [![PyPI](https://img.shields.io/pypi/v/ohlc-toolkit)](https://pypi.org/project/ohlc-toolkit/)
 ![Python](https://img.shields.io/badge/python-3.12-blue.svg)
+[![Codacy Badge](https://app.codacy.com/project/badge/Grade/0db6f73fe9bb4e8a8591055a6ea284f2)](https://app.codacy.com/gh/ff137/ohlc-toolkit/dashboard?utm_source=gh&utm_medium=referral&utm_content=&utm_campaign=Badge_grade)
+[![Codacy Badge](https://app.codacy.com/project/badge/Coverage/0db6f73fe9bb4e8a8591055a6ea284f2)](https://app.codacy.com/gh/ff137/ohlc-toolkit/dashboard?utm_source=gh&utm_medium=referral&utm_content=&utm_campaign=Badge_coverage)
 [![License](https://img.shields.io/badge/License-MIT-blue.svg)](https://opensource.org/license/MIT)
 
 A flexible Python toolkit for working with OHLC (Open, High, Low, Close) market data.