read_config() does not parse tasks when creating Model objects

[lazyoracle]

Describe the bug
read_config() does not parse for tasks when creating Model object

To Reproduce

• Create a config file with a tasks component
• Read config file with read_config()
• Tasks not parsed and included in Model object

Expected behavior
When tasks are included in the config file, they should get instantiated along with the rest of model attributes

c3/c3/system/model.py

Lines 121 to 154 in ef95330

	def read_config(self, filepath: str) -> None:
	"""
	Load a file and parse it to create a Model object.
	Parameters
	----------
	filepath : str
	Location of the configuration file
	"""
	with open(filepath, "r") as cfg_file:
	cfg = hjson.loads(cfg_file.read())
	for name, props in cfg["Qubits"].items():
	props.update({"name": name})
	dev_type = props.pop("c3type")
	self.subsystems[name] = device_lib[dev_type](**props)
	for name, props in cfg["Couplings"].items():
	props.update({"name": name})
	dev_type = props.pop("c3type")
	self.couplings[name] = device_lib[dev_type](**props)
	if dev_type == "Drive":
	for connection in self.couplings[name].connected:
	try:
	self.subsystems[connection].drive_line = name
	except KeyError as ke:
	raise Exception(
	f"C3:ERROR: Trying to connect drive {name} to unkown "
	f"target {connection}."
	) from ke
	if "use_dressed_basis" in cfg:
	self.dressed = cfg["use_dressed_basis"]
	self.__create_labels()
	self.__create_annihilators()
	self.__create_matrix_representations()

[lazyoracle]

Related: https://github.com/shaimach/c3po/issues/8