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

settings.gradle

@@ -18,6 +18,7 @@ include ':glog'
 include ':libevent'
 include ':rsocket'
 include ':third-party'
+include ':noop'
 
 project(':fbjni').projectDir = file('libs/fbjni')
 project(':easywsclient').projectDir = file('libs/easywsclient')
@@ -30,3 +31,4 @@ project(':folly').projectDir = file('android/third-party/external/folly/')
 project(':libevent').projectDir = file('android/third-party/external/LibEvent/')
 project(':rsocket').projectDir = file('android/third-party/external/RSocket/')
 project(':third-party').projectDir = file('android/third-party/')
+project(':noop').projectDir = file('android/no-op/')