refactor: Migrate plugin to Kotlin

packages/example/pubspec.lock

@@ -69,10 +69,10 @@ packages:
     dependency: transitive
     description:
       name: characters
-      sha256: f71061c654a3380576a52b451dd5532377954cf9dbd272a78fc8479606670803
+      sha256: faf38497bda5ead2a8c7615f4f7939df04333478bf32e4173fcb06d428b5716b
       url: "https://pub.dev"
     source: hosted
-    version: "1.4.0"
+    version: "1.4.1"
   clock:
     dependency: transitive
     description:
@@ -454,26 +454,26 @@ packages:
     dependency: transitive
     description:
       name: matcher
-      sha256: dc58c723c3c24bf8d3e2d3ad3f2f9d7bd9cf43ec6feaa64181775e60190153f2
+      sha256: "12956d0ad8390bbcc63ca2e1469c0619946ccb52809807067a7020d57e647aa6"
       url: "https://pub.dev"
     source: hosted
-    version: "0.12.17"
+    version: "0.12.18"
   material_color_utilities:
     dependency: transitive
     description:
       name: material_color_utilities
-      sha256: f7142bb1154231d7ea5f96bc7bde4bda2a0945d2806bb11670e30b850d56bdec
+      sha256: "9c337007e82b1889149c82ed242ed1cb24a66044e30979c44912381e9be4c48b"
       url: "https://pub.dev"
     source: hosted
-    version: "0.11.1"
+    version: "0.13.0"
   meta:
     dependency: transitive
     description:
       name: meta
-      sha256: e3641ec5d63ebf0d9b41bd43201a66e3fc79a65db5f61fc181f04cd27aab950c
+      sha256: "23f08335362185a5ea2ad3a4e597f1375e78bce8a040df5c600c8d3552ef2394"
       url: "https://pub.dev"
     source: hosted
-    version: "1.16.0"
+    version: "1.17.0"
   mime:
     dependency: transitive
     description:
@@ -611,10 +611,10 @@ packages:
     dependency: transitive
     description:
       name: test_api
-      sha256: "522f00f556e73044315fa4585ec3270f1808a4b186c936e612cab0b565ff1e00"
+      sha256: "93167629bfc610f71560ab9312acdda4959de4df6fac7492c89ff0d3886f6636"
       url: "https://pub.dev"
     source: hosted
-    version: "0.7.6"
+    version: "0.7.9"
   typed_data:
     dependency: transitive
     description:

packages/google_mlkit_barcode_scanning/android/build.gradle

@@ -2,13 +2,15 @@ group = "com.google_mlkit_barcode_scanning"
 version = "1.0"
 
 buildscript {
+    ext.kotlin_version = "2.2.20"
     repositories {
         google()
         mavenCentral()
     }
 
     dependencies {
         classpath("com.android.tools.build:gradle:8.13.0")
+        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:2.2.20")
     }
 }
 
@@ -20,6 +22,7 @@ rootProject.allprojects {
 }
 
 apply plugin: "com.android.library"
+apply plugin: "kotlin-android"
 
 android {
     namespace = "com.google_mlkit_barcode_scanning"
@@ -31,11 +34,19 @@ android {
         targetCompatibility = JavaVersion.VERSION_11
     }
 
+    kotlinOptions {
+        jvmTarget = '11'
+    }
+
+    sourceSets {
+        main.java.srcDirs += "src/main/kotlin"
+    }
+
     defaultConfig {
         minSdk = 21
     }
 
     dependencies {
-    implementation("com.google.mlkit:barcode-scanning:17.3.0")
+        implementation("com.google.mlkit:barcode-scanning:17.3.0")
     }
 }

packages/google_mlkit_barcode_scanning/android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.0-milestone-1-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists