Add try-catch, for, while, while do, and enum, and fix if

[gerblesh]

Hi! Was working on Helix support for the queries when I realized the grammar hadn't implemented these structures. Figured I'd have a go at it. First time playing around with treesitter so things probably aren't ideal but it mostly works. I still also need to get tests passing and write some tests

[gerblesh]

There's some odd behavior where when trying to do the range operator on two ints, the grammar thinks it's a float:
1...5 would give (float) instead of ( (integer) (integer))

[gerblesh]

I have also yet to figure out the best way to do array comprehension, accounting for while, do while and for, and also making sure that nested comprehension works as well

[gerblesh]

it may be worth looking into https://tree-sitter.github.io/tree-sitter/creating-parsers#external-scanners for the range operator/floats, the regex for the floats would be hard to get right

[gerblesh]

"fixed" the range expression for now. Still really confused on how to deal with the conditional operator thing. Looks like it conflicts with type_params??

[tobil4sk]

Instead of having specific constructs for array comprehensions, perhaps for/while should be allowed as a generic "expression" element, and expressions should be allowed within [ ].

[tobil4sk]

There's some odd behavior where when trying to do the range operator on two ints, the grammar thinks it's a float:
1...5 would give (float) instead of ( (integer) (integer))

Fixing this regex may solve the float problem:

tree-sitter-haxe/grammar-literals.js

Line 12 in 12e814c

float: ($) => choice(/[\d_]+[\.]+[\d_]*/, /[\d_]+[\.]+[\d_]*e[\d_]*/),

Right now it accepts any number of . >= 1.