title: intellij idea: generate MANIFEST.MF in gradle project
body: <p>I have gradle project (spring boot app) imported in Intellij Idea. When building with gradle I generate MANIFEST.MF with</p>
  
  <pre><code>bootJar {
      manifest {
          attributes 'Implementation-Version': "${version}"
          attributes 'Implementation-Title': "${project.name}"
          attributes 'Manifest-Version': "1.0"
      }
  }
  </code></pre>
  
  <p>however when running and building with Intellij manifest file is not generated (out/production/classes/META-INF) and in application <code>getClass().getPackage().getImplementationVersion()</code> is null</p>
  
  <p>How can I generat manifest with Intellij?</p>