using shadowJar to build a runnable version

build.gradle

@@ -1,9 +1,13 @@
 plugins {
   id 'java'
+  id 'application'
+  id 'com.github.johnrengelman.shadow' version '8.0.0'
 }
 
 group 'de.jottyfan.csv2camt'
-version '0.0.0'
+version '0.0.1'
+
+mainClassName = 'de.jottyfan.csv2camt.Main'
 
 repositories {
   mavenCentral()
@@ -16,4 +20,14 @@ dependencies {
   
   testImplementation 'org.junit.jupiter:junit-jupiter-api:5.11.3'
   testImplementation 'org.junit.jupiter:junit-jupiter-engine:5.11.3'
-}
+}
+
+shadowJar {
+  manifest {
+    attributes(
+      'Main-Class': mainClassName,
+      'Implementation-Title': project.name,
+      'Implementation-Version': version
+    )
+  }
+}