add java android demo (#1454)

android/SherpaOnnxJavaDemo/app/build.gradle

@@ -0,0 +1,41 @@
+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdk 34
+
+    defaultConfig {
+        applicationId "com.k2fsa.sherpa.onnx"
+        minSdk 28
+        targetSdk 32
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+    sourceSets.main{
+        jniLibs.srcDirs = ['jniLibs']
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.3.1'
+    implementation 'com.google.android.material:material:1.3.0'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation 'pub.devrel:easypermissions:3.0.0'
+    implementation project(path: ':sherpa')
+
+}