chore: add Kotlin support and dependencies

This commit introduces Kotlin to the project build configuration.
* Defines `kotlin_version` as 2.1.0 in the root `build.gradle`.
* Adds the `kotlin-gradle-plugin` to the root buildscript dependencies.
* Applies the `kotlin-android` plugin in `app/build.gradle`.
* Configures `kotlinOptions` with a JVM target of 17.
* Adds the `kotlin-stdlib` dependency to the app module.

Author: eby-dev

app/build.gradle

@@ -1,6 +1,7 @@
 plugins {
     id 'com.android.application'
     id 'com.google.gms.google-services'
+    id 'kotlin-android'
 }
 
 def BUILD_DATE = getBuildDate()
@@ -62,6 +63,10 @@ android {
         targetCompatibility JavaVersion.VERSION_17
     }
 
+    kotlinOptions {
+        jvmTarget = "17"
+    }
+
     buildFeatures {
         buildConfig true
         viewBinding true
@@ -82,4 +87,6 @@ dependencies {
     implementation 'com.google.firebase:firebase-analytics'
 
     implementation 'me.dm7.barcodescanner:zxing:1.9.8'
+
+    implementation 'org.jetbrains.kotlin:kotlin-stdlib:2.1.0'
 }

build.gradle

@@ -1,5 +1,6 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 buildscript {
+    ext.kotlin_version = "2.1.0"
     repositories {
         google()
         mavenCentral()
@@ -10,6 +11,7 @@ buildscript {
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }