Move dead submodules in-tree

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

externals/oboe/samples/RhythmGame/build.gradle

@@ -0,0 +1,77 @@
+apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+
+android {
+    defaultConfig {
+        applicationId "com.google.oboe.samples.rhythmgame"
+        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'
+            }
+        }
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_18
+        targetCompatibility JavaVersion.VERSION_18
+    }
+    externalNativeBuild {
+        cmake {
+            path "CMakeLists.txt"
+        }
+    }
+    flavorDimensions "extractorLibrary"
+    productFlavors {
+        ndkExtractor {
+            dimension "extractorLibrary"
+
+            // Oboe has a minimum API of 16, but AMediaExtractor (used to extract the MP3 assets)
+            // is only available from API 21.
+            // For further backward compatibility consider using FFmpeg (see below)
+            minSdkVersion 21
+            externalNativeBuild {
+                cmake {
+                    arguments "-DUSE_FFMPEG=0"
+                }
+            }
+        }
+        /**
+         * To use FFmpeg for asset extraction do the following:
+         * - Uncomment this block
+         * - Change the build variant to ffmpegExtractor
+         * - Update the FFMPEG_DIR variable in CMakeLists.txt to the local FFmpeg path
+         */
+        /*
+        ffmpegExtractor {
+            dimension "extractorLibrary"
+            minSdkVersion 16
+            externalNativeBuild {
+                cmake {
+                    arguments "-DUSE_FFMPEG=1"
+                }
+            }
+        }
+        */
+    }
+    namespace 'com.google.oboe.samples.rhythmgame'
+    buildFeatures {
+        buildConfig true
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation 'androidx.appcompat:appcompat:1.7.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.2.1'
+}