Breaking Update Add UUID output to every Node

[PythonFZ]

This PR will require an update of all Nodes:

1. Rewrite the Graph
2. zntrack run ipsuite.nodes.LangevinThermostat --name <node-name> --uuid-only
3. dvc commit nodes/<node-name>/uuid

Otherwise, the stage will not load be rerun!

Furthermore, it is no longer possible to have:

zntrack.dvc.outs(zntrack.nwd)

but only

zntrack.dvc.outs(zntrack.nwd/<your file or path>)

[codecov]

Codecov Report

Merging #647 (50a6845) into main (e4479cb) will increase coverage by 0.12%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #647      +/-   ##
==========================================
+ Coverage   89.42%   89.54%   +0.12%     
==========================================
  Files          21       21              
  Lines        1560     1578      +18     
  Branches      601      617      +16     
==========================================
+ Hits         1395     1413      +18     
  Misses        165      165              

Flag	Coverage Δ
fulltest	89.54% <100.00%> (+0.12%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
zntrack/cli/__init__.py	85.00% <100.00%> (+1.39%)	⬆️
zntrack/core/node.py	92.51% <100.00%> (+0.16%)	⬆️
zntrack/fields/dvc/__init__.py	88.88% <100.00%> (+0.36%)	⬆️
zntrack/fields/zn/__init__.py	91.35% <100.00%> (+0.44%)	⬆️

... and 1 file with indirect coverage changes

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[PythonFZ]

We should probably use:
https://github.com/zincware/ZnFlow/blob/9cb3288bc9bddc7ca1a2cbc07f3ca5decd897e21/znflow/node.py#L57