Automated AAR build, move to folder and deJetify. Just add this to to end of your build.gradle file and run `prepareAAR` task

build.gradle

def manifest = new XmlSlurper().parse(file("./src/main/AndroidManifest.xml"))
def packageName = manifest.@package.text()

task copyAAR(type: Copy) {
  from "$projectDir/build/outputs/aar/"
  include 'android.aar'
  into "$projectDir/AAR/"
  rename 'android.aar', "${packageName}.aar"
  doLast {
    new File("$projectDir/AAR/build.gradle").text = """
      configurations.maybeCreate("default")
      artifacts.add("default", file('${packageName}.aar'))
      """
  }
}

task deJetify(type: Exec) {
  workingDir "$projectDir/AAR/"
  if (System.getProperty('os.name').toLowerCase(Locale.ROOT).contains('windows')) {
    commandLine 'cmd', '/c', 'npx', 'jetifier-standalone', '-r', '-i', "${packageName}.aar", '-o', "${packageName}-support.aar"
  } else {
    commandLine 'npx', 'jetifier-standalone', '-r', '-i', "${packageName}.aar", '-o', "${packageName}-support.aar"
  }
  ignoreExitValue true

  doLast {
    if(execResult.exitValue != 0) {
      logger.error("It seems that you don't have jetifier installed. Try installing it by `npm install jetifier` and try again")
    }
  }
}

task prepareAAR(type: GradleBuild) {
  tasks = ['assemble', 'copyAAR', 'deJetify']
}