feat(wing): add parser (#5021)

Co-authored-by: Christian Clason <c.clason@uni-graz.at>
Co-authored-by: ObserverOfTime <chronobserver@disroot.org>

tests/query/highlights/wing/class.w

@@ -0,0 +1,19 @@
+bring cloud;
+// <- keyword
+
+class Foo {
+// <- keyword
+//    ^   variable
+//        ^ punctuation.bracket
+  name: str;
+//^    field
+//      ^   type.builtin
+//         ^ punctuation.delimiter
+  init(name:  str) {
+//^    keyword
+//     ^    variable
+    this.name = name;
+//      ^ punctuation.delimiter
+//            ^ operator
+  }
+}

tests/query/highlights/wing/nested_method.w

@@ -0,0 +1,4 @@
+test1.test2.test3();
+// <- variable
+//    ^ property
+//          ^ method.call