add android support

android/sample-app/build.gradle.kts

@@ -0,0 +1,40 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
+plugins {
+    id("com.android.application")
+    id("org.jetbrains.kotlin.android")
+}
+
+android {
+    namespace = "cn.learningpad.oraltrainer.sample"
+    compileSdk {
+        version = release(36) {
+            minorApiLevel = 1
+        }
+    }
+    buildToolsVersion = "36.1.0"
+
+    defaultConfig {
+        applicationId = "cn.learningpad.oraltrainer.sample"
+        minSdk = 26
+        targetSdk = 35
+        versionCode = 1
+        versionName = "0.1.0"
+    }
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
+    }
+}
+
+kotlin {
+    compilerOptions {
+        jvmTarget.set(JvmTarget.JVM_17)
+    }
+}
+
+dependencies {
+    implementation(project(":oral-trainer-sdk"))
+    implementation("androidx.media3:media3-common:1.11.0")
+}