Bump version to v2.0.0 due to breaking AndroidX migration

Summary:
Fresco 2.0.0 requires applications to use AndroidX for support libraries.

If your application does NOT target AndroidX, please use Fresco version 1.14.2.

Reviewed By: passy

Differential Revision: D15803596

fbshipit-source-id: 75f0063b0e3d4b0414a4ce618d9f1d4332a3927e

gradle.properties

@@ -19,7 +19,7 @@ org.gradle.jvmargs=-Xmx2048m
 # org.gradle.parallel=true
 
 target=10
-VERSION_NAME=1.14.1
+VERSION_NAME=2.0.0
 GROUP=com.facebook.fresco
 
 # AndroidX support