JavaScript/TypeScript React: rename syntax definitions

Summary:
Rename definitions from JavaScript React to JavaScript React (JSX); and from TypeScript React to TypeScript React (TSX). Because JSX (JavaScript-XML) is the name of the files and React doesn't necessarily use JSX. It's much more descriptive to add JSX and TSX to the name of the definition, especially to facilitate the user search for highlighting languages.

More: https://en.reactjs.org/docs/introducing-jsx.html

Reviewers: Framework: Syntax Highlighting, dhaumann, cullmann

Reviewed By: Framework: Syntax Highlighting, cullmann

Subscribers: kwrite-devel, kde-frameworks-devel

Tags: Kate, Frameworks

Differential Revision: https://phabricator.kde.org/D25429