Add DOI badge to README

Added DOI badge to README for citation purposes.

Author: maximiliani

README.md

@@ -4,6 +4,7 @@
 [![CodeQL](https://github.com/kit-data-manager/com_mapping-service-input/actions/workflows/github-code-scanning/codeql/badge.svg)](https://github.com/kit-data-manager/com_mapping-service-input/actions/workflows/github-code-scanning/codeql)
 [![npm version](https://img.shields.io/npm/v/@kit-data-manager/mapping-service-input.svg)](https://www.npmjs.com/package/@kit-data-manager/mapping-service-input)
 [![GitHub Packages](https://img.shields.io/badge/GitHub%20Packages-published-2ea44f?logo=github)](https://github.com/kit-data-manager/com_mapping-service-input/pkgs/npm/mapping-service-input)
+[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.17551754.svg)](https://doi.org/10.5281/zenodo.17551754)
 
 The Mapping component serves as a user-friendly interface to extract metadata from data generated by instruments and map it to metadata schema.Our mappings are designed to align with widely accepted community schemes, custom-tailored for various techniques.