ci: add gradle release plugin

Author: tommytroen

.gitignore

@@ -6,3 +6,7 @@
 out/
 build/
 .gradle/
+/gradle/caches/
+/gradle/daemon/
+/gradle/native/
+/gradle/wrapper/dists/

build.gradle.kts

@@ -17,6 +17,7 @@ plugins {
     id("org.jmailen.kotlinter") version "2.2.0"
     id("com.google.cloud.tools.jib") version "2.0.0"
     id("com.github.johnrengelman.shadow") version "5.2.0"
+    id("net.researchgate.release") version "2.8.1"
     `java-library`
     `maven-publish`
     signing