Fix JSX highlighting for jsx files

[Gelio]

Building up on #127 , I've added a bunch of tests for JSX and JavaScript files, and then fixed the problems that were there.

The main issues were:

1. Improper query inheritance. ecma was not used but defined some useful patterns. javascript reimplemented some of ecma.
2. Missing jsx node types in javascript levels

Read commit messages for more context on these changes.

I've cleaned up the code and fixed these problems. Now the inheritance should be cleaner and there should not unused files in the inheritance hierarchy.

This fixes #126

Real-life results in JS(X?) files

extended.jsx

extended.js

Test results

All tests are passing :rocket:

[p00f]

Thanks!