Add esm badge (#67)

README.md

@@ -15,6 +15,7 @@
   <a href="https://app.codecov.io/gh/transeptorlabs/transeptor-bundler">
     <img src="https://img.shields.io/codecov/c/github/transeptorlabs/transeptor-bundler.svg?style=flat-square" alt="codecov">
   </a>
+  <img src="https://img.shields.io/badge/ESM-supported-brightgreen" alt="ESM Supported">
   <img src="https://img.shields.io/docker/pulls/transeptorlabs/bundler" alt="Docker pulls">
 </p>
 
@@ -166,4 +167,4 @@ We want to express our gratitude to the following individuals and organizations
 
 We are grateful to the open-source community and the countless developers who have shared their knowledge and resources, enabling us to build upon their work.
 
-Thank you all for your support!
+Thank you all for your support!