Move dead submodules in-tree

Signed-off-by: swurl <swurl@swurl.xyz>

externals/oboe/samples/SoundBoard/build.gradle

@@ -0,0 +1,59 @@
+apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+
+android {
+    defaultConfig {
+        applicationId "com.google.oboe.samples.soundboard"
+        minSdkVersion 21
+        targetSdkVersion 35
+        compileSdkVersion 35
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        externalNativeBuild {
+            cmake {
+                cppFlags "-std=c++17"
+                abiFilters 'armeabi-v7a', 'arm64-v8a', 'x86', 'x86_64'
+            }
+        }
+    }
+    signingConfigs {
+        release {
+            storeFile new File("${System.properties['user.home']}/.android/debug.keystore")
+            storePassword 'android'
+            storeType "jks"
+            keyAlias 'androiddebugkey'
+            keyPassword 'android'
+        }
+    }
+    buildTypes {
+        release {
+            signingConfig signingConfigs.release
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            debuggable false
+        }
+        debug {
+         debuggable true
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_18
+        targetCompatibility JavaVersion.VERSION_18
+    }
+    kotlinOptions {
+        jvmTarget = '18'
+    }
+    externalNativeBuild {
+        cmake {
+            path "src/main/cpp/CMakeLists.txt"
+        }
+    }
+    namespace 'com.google.oboe.samples.soundboard'
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation 'androidx.appcompat:appcompat:1.7.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.2.1'
+}