Set up no-op package (#425)

Summary:
Pull Request resolved: https://github.com/facebook/flipper/pull/425

Incomplete implementation that should allow for most uses
as a release-only package.

Next steps:
- Integrate sample app with this.
- Set up CI to build sample app in release mode with this.
- Register with JCenter.
- Automatically publish to JCenter as part of our release step.

Reviewed By: jknoxville

Differential Revision: D15146823

fbshipit-source-id: 3ad058dce7b0395721c6e6715d44d4d51b1834da

android/no-op/build.gradle

@@ -0,0 +1,38 @@
+// Copyright (c) Facebook, Inc. and its 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.library'
+apply plugin: 'maven'
+
+android {
+    compileSdkVersion rootProject.compileSdkVersion
+    buildToolsVersion rootProject.buildToolsVersion
+
+    defaultConfig {
+        minSdkVersion rootProject.minSdkVersion
+        targetSdkVersion rootProject.targetSdkVersion
+    }
+
+    sourceSets {
+        test {
+            java {
+                exclude 'com/facebook/flipper/plugins/facebook/**'
+            }
+        }
+    }
+
+    dependencies {
+        implementation deps.jsr305
+    }
+}
+
+apply from: rootProject.file('gradle/release.gradle')
+
+task sourcesJar(type: Jar) {
+    from android.sourceSets.main.java.srcDirs
+    classifier = 'sources'
+}
+
+artifacts.add('archives', sourcesJar)