add trailing commas in parameters (in func definition)

Author: shadr

queries/gdscript.scm

@@ -67,6 +67,7 @@
 (parameters
     ([(typed_parameter) (typed_default_parameter) (identifier) (default_parameter)]) @prepend_hardline @prepend_indent_start @append_indent_end
     (#multi_line_only!))
+(parameters (([(typed_parameter) (typed_default_parameter) (identifier) (default_parameter)]) @append_delimiter (#delimiter! ",") . ","? @do_nothing . (comment)? . ")") (#multi_line_only!))
 
 ; CLASS DEFINITIONS
 (class_definition (body) @prepend_hardline)

tests/expected/func_args_multiline.gd

@@ -2,7 +2,7 @@ func test(
 		a: int,
 		b: String,
 		c,
-		d = 42
+		d = 42,
 ) -> void:
 	pass
 

tests/expected/func_constructor_args_multiline.gd

@@ -1,7 +1,7 @@
 func _init(
 		init_mob: Mob3D,
 		init_spawning_point: Node3D,
-		init_projectile_scene: PackedScene
+		init_projectile_scene: PackedScene,
 ) -> void:
 	pass