make the project compile even with the app not having dependency on Kotlin (#869)

Author: bartekpacia

android/build.gradle

@@ -3,19 +3,19 @@ buildscript {
     repositories {
         google()
         mavenCentral()
+        gradlePluginPortal()
     }
 
     dependencies {
         classpath "com.android.tools.build:gradle:7.2.2"
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+        classpath "org.jlleitschuh.gradle:ktlint-gradle:11.0.0"
     }
 }
 
-plugins {
-    id "com.android.library"
-    id "kotlin-android"
-    id "org.jlleitschuh.gradle.ktlint" version "11.0.0"
-}
+apply plugin: "com.android.library"
+apply plugin: "kotlin-android"
+apply plugin: "org.jlleitschuh.gradle.ktlint"
 
 group "vn.hunghd.flutterdownloader"
 version "1.0-SNAPSHOT"