Implemented 3D connected components as wrapper class for scipy.ndimage.label

Ticket: https://www.notion.so/qim-dtu/3D-connected-components-ca5c410fef49444eac7c6efd0b56ead4?pvs=4

I have made a simple plot functions that takes the ConnectedComponents object and extracts the connected_components volume.

However I don't know if it is necessary as the user could do this manually.

def plot_connected_components(connected_components: ConnectedComponents, **kwargs):
    """ Plots connected components from the ConnectedComponents class as 2d slices.

    Args:
        connected_components (ConnectedComponents): The connected components class from the qim3d.utils.connected_components module.
        **kwargs: Additional keyword arguments to pass to qim3d.viz.img.slice_viz.

    Returns:
        matplotlib.pyplot: the 3D plot of the connected components.
    """
    fig = slice_viz(connected_components.connected_components, **kwargs)
    return fig

qim3d/tests/utils/test_connected_components.py

 import numpy as np
 import pytest
 
-from qim3d.utils.connected_components import get_3d_connected_components
+from qim3d.utils.cc import get_3d_cc
 
 
 @pytest.fixture(scope="module")
@@ -11,7 +11,7 @@ def setup_data():
                            [1,1,0,0,1,0],
                            [0,0,0,1,0,0]])
     num_components = 4
-    connected_components = get_3d_connected_components(components)
+    connected_components = get_3d_cc(components)
     return connected_components, components, num_components
 
 def test_connected_components_property(setup_data):