feature proposal: cache script paths

[phosphorylation]

I noticed that _format_data incurs a significant overhead by looking up the script names and class names. I added two simple dictionary as cache to hide it, something like this.

static var GLOBAL_PATH_FILTER_CACHE := {}
static var GLOBAL_SCRIPT_CACHE := {}

static func _get_format_data(entry:LogStream.LogEntry)->Dictionary:
	var now = Time.get_datetime_dict_from_system(USE_UTC_TIME_FORMAT)
	
	var log_call = null
	var script = ""
	var script_class_name = ""
	if !entry.stack.is_empty():
		log_call = entry.stack[0]
		var source = log_call["source"]
		if source in GLOBAL_SCRIPT_CACHE:
			script = GLOBAL_SCRIPT_CACHE[source]
		else:
			script = source.split("/")[-1]
			GLOBAL_SCRIPT_CACHE[source] = script
		var result
		if entry in GLOBAL_PATH_FILTER_CACHE:
			result = GLOBAL_PATH_FILTER_CACHE[entry]
		else:
			result = GLOBAL_PATH_LIST.filter(func(entry):return entry["path"] == source)
			GLOBAL_PATH_FILTER_CACHE[entry] = result
		script_class_name = script if result.is_empty() else result[0]["class"]

Should hold as long as the scripts don't change while game's running. you are welcomed to test the improvements.