Add sizemode property for Sensor, pixel and Dipole

[Alexboiboi]

• This adds the sizemode property ("scaled" by default or "absolute") for Sensor, pixel and Dipole as in Add magnetization and current arrows sizemode #639

import magpylib as magpy

dips = [
    magpy.misc.Dipole(
        moment=(0, 0, 1),
        position=(size, 0 if sizemode == "scaled" else 1, 0),
        style_size=size,
        style_sizemode=sizemode,
        style_pivot="tail",
        style_label=f"{sizemode=}, {size=}",
        style_description_show=False,
    )
    for size in range(1, 4)
    for sizemode in ("scaled", "absolute")
]
magpy.show(*dips)

import magpylib as magpy

sens = [
    magpy.Sensor(
        position=(size - 3, 0 if sizemode == "scaled" else 2, 0),
        style_size=size,
        style_sizemode=sizemode,
        style_label=f"{sizemode=}, {size=}",
        style_description_show=False,
    )
    for size in range(1, 4)
    for sizemode in ("scaled", "absolute")
]
magpy.show(*sens)

import magpylib as magpy
import numpy as np

sens = [
    magpy.Sensor(
        pixel=[(0, 0, 0), (1, 0, 0), (2, 0, 0)],
        position=(0, 0 if pixel_sizemode == "scaled" else 1, 0),
        style_pixel_size=0.5,
        style_pixel_sizemode=pixel_sizemode,
        style_label=f"{pixel_sizemode=}, pixel_size=0.5",
        style_description_show=False,
    )
    for pixel_sizemode in ("scaled", "absolute")
]
magpy.show(*sens)

[codecov]

Codecov Report

Merging #658 (7d779c5) into main (b9c8be1) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #658   +/-   ##
=======================================
  Coverage   99.26%   99.26%           
=======================================
  Files          55       55           
  Lines        7073     7095   +22     
=======================================
+ Hits         7021     7043   +22     
  Misses         52       52           

Files Changed	Coverage Δ
magpylib/_src/defaults/defaults_values.py	100.00% <ø> (ø)
magpylib/_src/display/backend_matplotlib.py	100.00% <100.00%> (ø)
magpylib/_src/display/traces_core.py	100.00% <100.00%> (ø)
magpylib/_src/style.py	99.74% <100.00%> (+<0.01%)	⬆️

[OrtnerMichael]

cool stuff

[Alexboiboi]

@OrtnerMichael

• This PR cannot be merged yet, as it is based on Add show and fig underscore magic to magpylib.show(...) and style.legend.show property #657