docs: add codacy badge

[skip ci]

README.md

@@ -6,6 +6,7 @@
 [![Security audit](https://github.com/jqnatividad/qsv/actions/workflows/security-audit.yml/badge.svg)](https://github.com/jqnatividad/qsv/actions/workflows/security-audit.yml)
 [![Downloads](https://img.shields.io/github/downloads/jqnatividad/qsv/total?logo=github)](https://github.com/jqnatividad/qsv/releases/latest)
 [![Clones](https://img.shields.io/badge/dynamic/json?color=success&label=clones&query=count&url=https://gist.githubusercontent.com/jqnatividad/13f60ad0b54856a55f60b8e653079349/raw/clone.json&logo=github)](https://github.com/MShawon/github-clone-count-badge)
+[![Codacy Badge](https://app.codacy.com/project/badge/Grade/05fdfbc6ddb24e7c829d0c6c3ce82d18)](https://app.codacy.com/gh/jqnatividad/qsv/dashboard?utm_source=gh&utm_medium=referral&utm_content=&utm_campaign=Badge_grade)
 [![Discussions](https://img.shields.io/github/discussions/jqnatividad/qsv)](https://github.com/jqnatividad/qsv/discussions)
 [![HomeBrew](https://img.shields.io/homebrew/v/qsv?logo=homebrew)](https://formulae.brew.sh/formula/qsv)
 [![Crates.io](https://img.shields.io/crates/v/qsv.svg?logo=crates.io)](https://crates.io/crates/qsv)