Redesign parameter handling

[nwittler]

Is your feature request related to a problem? Please describe.

Describe the solution you'd like
Previously parameters of both model and control components were managed in a object.params dictionary. This should be modified so that the property is directly a field of the object. E.g. qubit.params["frequency"] becomes qubit.frequency.
Example:

c3/c3/system/chip.py

Lines 77 to 99 in ef95330

	def __init__(
	self,
	name,
	hilbert_dim,
	desc=None,
	comment=None,
	freq=None,
	anhar=None,
	t1=None,
	t2star=None,
	temp=None,
	params=None,
	):
	# TODO Cleanup params passing and check for conflicting information
	super().__init__(
	name=name,
	desc=desc,
	comment=comment,
	hilbert_dim=hilbert_dim,
	params=params,
	)
	if freq:
	self.params['freq'] = freq

For this to work each object needs to implement a get_parameters() method that exposes properties to the parametermap to be used instead of comp.params.items() in the following:

c3/c3/parametermap.py

Lines 38 to 45 in ef95330

	def __initialize_parameters(self) -> None:
	par_lens = {}
	pars = {}
	for comp in self.__components.values():
	for par_name, par_value in comp.params.items():
	par_id = "-".join([comp.name, par_name])
	par_lens[par_id] = par_value.length
	pars[par_id] = par_value

Describe alternatives you've considered

Additional context