Remove tracked value tracked

[PythonFZ]

• rename zntrack_type to zn_type to fit utils.ZnTypes
• automatically selected dvc_option based on class name, if None is provided
• introdue utils.DVCOptions enum
• add VALUE_DVC_TRACKED and FILE_DVC_TRACKED

[codecov]

Codecov Report

Merging #253 (ea260b9) into main (64fb149) will increase coverage by 0.40%.
The diff coverage is 93.33%.

@@            Coverage Diff             @@
##             main     #253      +/-   ##
==========================================
+ Coverage   70.86%   71.26%   +0.40%     
==========================================
  Files          23       24       +1     
  Lines        1064     1051      -13     
  Branches      200      201       +1     
==========================================
- Hits          754      749       -5     
+ Misses        289      281       -8     
  Partials       21       21              

Flag	Coverage Δ
unittests	71.26% <93.33%> (+0.40%)	⬆️

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

Impacted Files	Coverage Δ
zntrack/core/dvcgraph.py	71.91% <55.55%> (ø)
zntrack/core/base.py	85.89% <66.66%> (+2.14%)	⬆️
zntrack/core/zntrackoption.py	83.33% <100.00%> (ø)
zntrack/dvc/__init__.py	97.61% <100.00%> (-0.72%)	⬇️
zntrack/utils/__init__.py	100.00% <100.00%> (+14.28%)	⬆️
zntrack/utils/config.py	100.00% <100.00%> (ø)
zntrack/utils/structs.py	100.00% <100.00%> (ø)
zntrack/zn/__init__.py	82.35% <100.00%> (-2.65%)	⬇️
zntrack/zn/method.py	70.83% <100.00%> (ø)
zntrack/zn/plots.py	68.00% <100.00%> (-1.24%)	⬇️
... and 2 more

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