adding spotless, re-importing customer.jdl and spotlessApply

build.gradle

@@ -13,6 +13,8 @@ buildscript {
         classpath "org.openapitools:openapi-generator-gradle-plugin:3.3.0"
         classpath "gradle.plugin.com.gorylenko.gradle-git-properties:gradle-git-properties:1.5.2"
         //jhipster-needle-gradle-buildscript-dependency - JHipster will add additional gradle build script plugins here
+
+        classpath "com.diffplug.spotless:spotless-plugin-gradle:3.22.0"
     }
 }
 
@@ -41,6 +43,8 @@ apply plugin: 'com.moowork.node'
 apply plugin: 'io.spring.dependency-management'
 apply plugin: 'idea'
 
+apply from: 'build-spotless.gradle'
+
 idea {
   module {
     excludeDirs += files('node_modules')