Refactor(build): Migrate JVM target to Kotlin DSL format (#360)

Updates the 'jvmTarget' definition in the build files to use the modern, non-deprecated Kotlin DSL syntax (e.g., JvmTarget.JVM_17). This improves build script readability and prevents future warnings/breakages.

Author: Kim1ni

build-android-start/app/build.gradle.kts

@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
 plugins {
     id("com.android.application")
     id("kotlin-android")
@@ -39,8 +41,10 @@ android {
         sourceCompatibility = JavaVersion.VERSION_17
         targetCompatibility = JavaVersion.VERSION_17
     }
-    kotlinOptions {
-        jvmTarget = "17"
+    kotlin {
+        compilerOptions {
+            jvmTarget = JvmTarget.JVM_17
+        }
     }
 
     lint {

build-android/app/build.gradle.kts

@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
 plugins {
     id("com.android.application")
     id("kotlin-android")
@@ -39,8 +41,10 @@ android {
         sourceCompatibility = JavaVersion.VERSION_17
         targetCompatibility = JavaVersion.VERSION_17
     }
-    kotlinOptions {
-        jvmTarget = "17"
+    kotlin {
+        compilerOptions {
+            jvmTarget = JvmTarget.JVM_17
+        }
     }
 
     lint {