Add support for rhino as a compilation target (#13448)

* Add support for rhino as a compilation target

* Add tests for target: rhino

* Fix test failing due to whitespace

* Keep consistent names for rhino tests in babel 7 and 8

* Bump core-js-compat to 3.15.0

* Change references to rhino to include patch version

* Update compat table data import

* Split transpilation of arrow function features more finely

* Rename rhino fixtures to include the patch number and update to include syntax that is and isn't supported for better testing

* Only use the relevant features for transform-new-target and transform-classes

Author: gausie

lib/third-party-libs.js.flow

@@ -187,7 +187,7 @@ declare module "convert-source-map" {
 }
 
 declare module "core-js-compat/data" {
-  declare type Target = "node" | "chrome" | "opera" | "edge" | "firefox" | "safari" | "ie" | "ios" | "android" | "electron" | "samsung";
+  declare type Target = "node" | "chrome" | "opera" | "edge" | "firefox" | "safari" | "ie" | "ios" | "android" | "electron" | "samsung" | "rhino";
 
   declare module.exports: {
     [key: string]: {