Parse package.json manifest

[Jujulego]

Closes #4

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 6 lines in your changes are missing coverage. Please review.

Project coverage is 0.00%. Comparing base (ed0e7de) to head (90b0361).

Files	Patch %	Lines
crates/ring-js-project-parser/src/manifest/mod.rs	0.00%	6 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##            latest      #8        +/-   ##
============================================
- Coverage   100.00%   0.00%   -100.00%     
============================================
  Files            1       1                
  Lines            7       6         -1     
  Branches         7       6         -1     
============================================
- Hits             7       0         -7     
- Misses           0       6         +6     

Flag	Coverage Δ
unit	0.00% <0.00%> (-100.00%)	⬇️

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