Refactor

[cmungall]

• Removed docs that were generated by pandoc over google slides.
• Added a Tutorial notebook
• improved README
• Added a compliance test suite
• Added generation of markdown and graphviz
• Reorganized some packages
• Removed unused rdflib transformer

[codecov-commenter]

Codecov Report

Attention: 160 lines in your changes are missing coverage. Please review.

Comparison is base (9066675) 84.92% compared to head (bb876cf) 80.97%.

Files	Patch %	Lines
src/linkml_transformer/session.py	0.00%	83 Missing ⚠️
...nkml_transformer/transformer/object_transformer.py	76.66%	28 Missing ⚠️
src/linkml_transformer/cli/cli.py	46.51%	23 Missing ⚠️
src/linkml_transformer/inference/inverter.py	90.78%	7 Missing ⚠️
src/linkml_transformer/transformer/transformer.py	92.18%	5 Missing ⚠️
src/linkml_transformer/compiler/compiler.py	80.95%	4 Missing ⚠️
src/linkml_transformer/inference/schema_mapper.py	92.45%	4 Missing ⚠️
...c/linkml_transformer/compiler/j2_based_compiler.py	91.66%	2 Missing ⚠️
...rc/linkml_transformer/functions/unit_conversion.py	96.00%	2 Missing ⚠️
...c/linkml_transformer/compiler/graphviz_compiler.py	98.41%	1 Missing ⚠️
... and 1 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #12      +/-   ##
==========================================
- Coverage   84.92%   80.97%   -3.96%     
==========================================
  Files          21       29       +8     
  Lines         856     1498     +642     
==========================================
+ Hits          727     1213     +486     
- Misses        129      285     +156     

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