yoga::Node::getStyle() to yoga::Node::style() (#1555)

Summary:
X-link: https://github.com/facebook/react-native/pull/42314

Pull Request resolved: https://github.com/facebook/yoga/pull/1555

The next diff moves a bunch of methods to `yoga::Style`. This renames the function to be a tad bit shorter, for more readable callsites. It also makes it more consistent with style property getters.

Changelog: [Internal]

Reviewed By: rozele

Differential Revision: D52803393

fbshipit-source-id: 557df34a9f0fb0ee42ad23b1fda99c1e0eb1d4e3

yoga/node/Node.h

@@ -94,11 +94,11 @@ class YG_EXPORT Node : public ::YGNode {
   }
 
   // For Performance reasons passing as reference.
-  Style& getStyle() {
+  Style& style() {
     return style_;
   }
 
-  const Style& getStyle() const {
+  const Style& style() const {
     return style_;
   }