Setup fbjni sub-project for maven (#119)

Summary:
Set up our fbjni sub-project to be published to Maven Central.
This removes a bunch of abiFilters that we no longer make use of, too.
Closes https://github.com/facebook/Sonar/pull/119

Reviewed By: priteshrnandgaonkar

Differential Revision: D8694537

Pulled By: passy

fbshipit-source-id: de246fbda99c02856fbc7806b78df2114cb82acb

android/sample/build.gradle

@@ -46,7 +46,7 @@ dependencies {
     // SoLoader
     implementation deps.soloader
 
-// For integration with Fresco
+    // For integration with Fresco
     implementation deps.lithoFresco
     // For testing
     testImplementation deps.lithoTesting