Plugin fails to be enabled if no args (yet)

[WilliamTambellini]

res://addons/multirun/Multirun.gd - Parse Error: Invalid operands "bool" and "PackedStringArray" for "and" operator.

MultirunForGodot4/addons/multirun/Multirun.gd

Line 40 in 3071a2d

var commands = _str_args_to_commands(args[0]) if add_custom_args && args else []

Easy to fix I guess:

	var commands = _str_args_to_commands(args[0]) if add_custom_args && !args.is_empty() else []

[cyraid]

@WilliamTambellini hi William! Sorry I didn't get notifications to this repo for some reason, feel free to ping me directly. Did you wanna submit a PR or is it bugging you a lot and you would like me to? (I currently don't work with godot anymore but I still am around to maintain for others :) )