Adding back in README, License and making cli optional

[ghandic]

Can view the contents of tar.gz by running:

make build && tar -xvf dist/jsf-0.5.2.tar.gz

Now includes README, LICENSE and jsf[cli] will install the cli dependencies

[codecov-commenter]

Codecov Report

Base: 99.40% // Head: 99.40% // No change to project coverage 👍

Coverage data is based on head (2f5fe28) compared to base (97a864d).
Patch coverage: 100.00% of modified lines in pull request are covered.

❗ Current head 2f5fe28 differs from pull request most recent head 2858434. Consider uploading reports for the commit 2858434 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #52   +/-   ##
=======================================
  Coverage   99.40%   99.40%           
=======================================
  Files          22       22           
  Lines         845      845           
=======================================
  Hits          840      840           
  Misses          5        5           

Impacted Files	Coverage Δ
src/tests/conftest.py	100.00% <100.00%> (ø)
src/tests/test_model_gen.py	100.00% <100.00%> (ø)
src/tests/test_parser.py	100.00% <100.00%> (ø)
src/tests/test_utils.py	100.00% <100.00%> (ø)

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