Improve wren support

[Jummit]

This uses the improved grammar and adds queries for indenting, injections and locals, plus overall improvements.

Maybe this isn't the right place to ask this, but is there a reason why only parameters are highlighted a different color using the locals queries?

Example:

function test(a) {
  a // highlighted
  const b = 1
  b // not highlighted
}

I guess it's because it's less confusing?

[the-mikedavis]

Locals queries allow the highlighting to track between definitions and references. a is @variable.parameter because when a is defined it's tagged as @variable.parameter. b is defined just as @variable on line 3 so all usages of b will also be @variable. Both are affected by the locals query but a is parameter.