re-add Javadoc

Author: osiegmar

README.md

@@ -1,6 +1,7 @@
 # Logback awslogs JSON encoder
 
 [![build](https://github.com/osiegmar/logback-awslogs-json-encoder/actions/workflows/build.yml/badge.svg)](https://github.com/osiegmar/logback-awslogs-json-encoder/actions/workflows/build.yml)
+[![javadoc](https://javadoc.io/badge2/de.siegmar/logback-awslogs-json-encoder/javadoc.svg)](https://javadoc.io/doc/de.siegmar/logback-awslogs-json-encoder)
 [![Maven Central](https://img.shields.io/maven-central/v/de.siegmar/logback-awslogs-json-encoder.svg)](https://central.sonatype.com/artifact/de.siegmar/logback-awslogs-json-encoder)
 
 Logback encoder for producing JSON output that is handled by

build.gradle.kts

@@ -14,6 +14,7 @@ java {
     toolchain {
         languageVersion = JavaLanguageVersion.of(11)
     }
+    withJavadocJar()
     withSourcesJar()
 }