Make litho/sections a separate plugin

Summary:
Breaking Litho/Sections off. Doesn't really make sense to have
two deps for this especially since they're pretty tightly coupled.

This makes our core already quite slim.

Reviewed By: jknoxville

Differential Revision: D17420118

fbshipit-source-id: 9a03911f4af6410745b9aefd0e6a75bdf106660f

android/plugins/litho/build.gradle

@@ -0,0 +1,30 @@
+/*
+ * 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
+    }
+
+    dependencies {
+        compileOnly deps.lithoAnnotations
+        implementation project(':android')
+        implementation deps.lithoCore
+        implementation deps.lithoSectionsDebug
+        implementation deps.lithoSectionsCore
+        implementation deps.lithoWidget
+        implementation deps.supportAppCompat
+        compileOnly deps.jsr305
+    }
+}