Let the Yoga sample app compile

Summary:
The sample app is really old and has a lot of legacy code. Here I'm refreshing it a bit.
Will do another pass later (perhaps rewrite it in Kotlin?).

Reviewed By: mdvacca

Differential Revision: D45694414

fbshipit-source-id: 36a84609b0dcf5b4a5237da900f665e4eb7895a5

sample/build.gradle

@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+apply plugin: 'com.android.application'
+
+android {
+    namespace 'com.facebook.yoga.sample'
+
+    compileSdkVersion rootProject.compileSdkVersion
+    buildToolsVersion rootProject.buildToolsVersion
+    ndkVersion rootProject.ndkVersion
+
+    defaultConfig {
+        minSdkVersion rootProject.minSdkVersion
+        targetSdkVersion rootProject.targetSdkVersion
+    }
+
+    compileOptions {
+        targetCompatibility rootProject.targetCompatibilityVersion
+        sourceCompatibility rootProject.sourceCompatibilityVersion
+    }
+}
+
+dependencies {
+    implementation project(':yoga-layout')
+    implementation("androidx.appcompat:appcompat:1.6.1")
+    implementation("com.facebook.soloader:soloader:0.10.4")
+}