Enhancement: updating the Plasma() component

[RemDelaporteMathurin]

This PR includes an upgrade of the Plasma() component which is now based on parametric equations.

These equations take 4 geometrical parameters namely minor and major radii, elongation and triangularity.

Usage

import paramak

plasma = paramak.Plasma(minor_radius=200, major_radius=620, triangularity=0.55, elongation=1.85, rotation_angle=180)
plasma.solid

[RemDelaporteMathurin]

@shimwell @billingsley-john since this PR removes things like plasma.radius_of_inside_arc , plasma.x_position_for_inside_arc, etc., it breaks the following test :

paramak/tests/test_ParametricComponents.py

Lines 192 to 201 in 281f3e7

	class test_CenterColumnShieldPlasmaHyperbola(unittest.TestCase):
	def test_CenterColumnShieldPlasmaHyperbola_creation(self):
	"""creates a CenterColumnShieldPlasmaHyperbola object and checks a solid is created"""
	test_shape = paramak.CenterColumnShieldPlasmaHyperbola(
	inner_radius=50, height=800, mid_offset=40, edge_offset=30
	)
	assert test_shape.solid is not None
	assert test_shape.volume > 1000