Refactor attributes code

[BradyAJohnston]

Refactors the attribute code to better abstract it and make more generalised.

Movement towards having the numpy / blender interface being a separate module that can be used in other projects.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 81.68498% with 100 lines in your changes missing coverage. Please review.

Project coverage is 73.89%. Comparing base (bb35110) to head (b5af79a). Report is 28 commits behind head on main.

Files with missing lines	Patch %	Lines
molecularnodes/blender/bpyd/attribute.py	76.77%	36 Missing :warning:
molecularnodes/blender/bpyd/object.py	81.10%	24 Missing :warning:
molecularnodes/blender/bpyd/nodes.py	82.85%	18 Missing :warning:
molecularnodes/blender/bpyd/collection.py	70.58%	5 Missing :warning:
molecularnodes/entities/trajectory/trajectory.py	80.00%	5 Missing :warning:
molecularnodes/blender/nodes.py	69.23%	4 Missing :warning:
molecularnodes/entities/molecule/molecule.py	85.71%	2 Missing :warning:
molecularnodes/entities/trajectory/ui.py	0.00%	2 Missing :warning:
molecularnodes/ui/panel.py	33.33%	2 Missing :warning:
molecularnodes/blender/utils.py	87.50%	1 Missing :warning:
... and 1 more

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #641 +/- ## ========================================== + Coverage 71.73% 73.89% +2.15% ========================================== Files 50 54 +4 Lines 4143 4271 +128 ========================================== + Hits 2972 3156 +184 + Misses 1171 1115 -56 ```

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