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.

Differential Revision: D42285129

fbshipit-source-id: 96ae133414c142f7cef5938ef45059b8386a44f8

javascript/.eslintrc.js

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