Add LOC badge

Author: itzg

README.md

@@ -1,5 +1,6 @@
 [![GitHub release (latest SemVer)](https://img.shields.io/github/v/release/itzg/mc-image-helper?sort=semver)](https://github.com/itzg/mc-image-helper/releases/latest)
 [![test](https://github.com/itzg/mc-image-helper/actions/workflows/test.yml/badge.svg)](https://github.com/itzg/mc-image-helper/actions/workflows/test.yml)
+![LOC](https://img.shields.io/endpoint?url=https%3A%2F%2Fshields-codetab-code-loc-bridge.vercel.app%2Fapi%2Fcodeloc%3Fgithub%3Ditzg%2Fmc-image-helper%26language%3Djava)
 
 This tool does the complicated bits for the [itzg/minecraft-server](https://github.com/itzg/docker-minecraft-server) and [itzg/bungeecord](https://github.com/itzg/docker-bungeecord/) Docker images.