Update javascript CMakeLists.txt to add SUPPORT_BIG_ENDIAN (#1857)

Summary:
Add support for Big Endian in Yoga WASM so that it works on big endian platforms like Linux on Z, z/OS, AIX and others.

SUPPORT_BIG_ENDIAN - This makes generated JavaScript run on BE as well as LE machines: https://github.com/emscripten-core/emscripten/blob/6b8bba1add53b1f039717998fb784b7bdf5d510b/site/source/docs/tools_reference/settings_reference.rst#support_big_endian

Pull Request resolved: #1857

Reviewed By: rshest

Differential Revision: D83065095

Pulled By: arushikesarwani94

fbshipit-source-id: 6e75d96f1c29299efb394578273fb8c58879a0bf

Author: IgorTodorovskiIBM

javascript/CMakeLists.txt

@@ -45,6 +45,7 @@ add_link_options(
     "SHELL:-s EXPORT_ES6=1"
     "SHELL:-s WASM=1"
     "SHELL:-s TEXTDECODER=0"
+    "SHELL:-s SUPPORT_BIG_ENDIAN=1"
     # SINGLE_FILE=1 combined with ENVIRONMENT='web' creates code that works on
     # both bundlders and Node.
     "SHELL:-s SINGLE_FILE=1"