Make cmakeBuildTask accept opts instead of array (#1204)

Summary:
Pull Request resolved: https://github.com/facebook/yoga/pull/1204

For expandability, consistency with other tasks, and added explicitness.

Reviewed By: huntie

Differential Revision: D42285129

fbshipit-source-id: 2b76a7dba7474bfae98509740c13c3e173fa9a27

javascript/.eslintrc.js

@@ -8,6 +8,7 @@
  */
 
 module.exports = {
+  root: true,
   ignorePatterns: ["dist/**", "**/*.d.ts"],
   parser: "@babel/eslint-parser",
   extends: [