Return JsonNode directly in JSONDocument

[suddendust]

Description

Adds a method Document#getJsonNode() that returns the JsonNode corresponding to a document. This method is useful to avoid double translation in client that currently read the JSON string and convert it to a JsonNode. With this, they can avoid this deserialisation.

Testing

Change is trivial, added a UT.

Checklist:

• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• Any dependent changes have been merged and published in downstream modules

[codecov]

Codecov Report

❌ Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 80.89%. Comparing base (ec45778) to head (77d882a).

Files with missing lines	Patch %	Lines
...va/org/hypertrace/core/documentstore/Document.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #318      +/-   ##
============================================
- Coverage     80.90%   80.89%   -0.01%     
- Complexity     1579     1580       +1     
============================================
  Files           242      242              
  Lines          7626     7628       +2     
  Branches        751      751              
============================================
+ Hits           6170     6171       +1     
- Misses          967      968       +1     
  Partials        489      489              

Flag	Coverage Δ
integration	80.89% <50.00%> (-0.01%)	⬇️
unit	55.34% <50.00%> (-0.01%)	⬇️

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[github-actions]

Test Results

  124 files  ±0    124 suites  ±0   39s ⏱️ -1s
  846 tests +1    845 ✅ +1  1 💤 ±0  0 ❌ ±0 
1 183 runs  +1  1 182 ✅ +1  1 💤 ±0  0 ❌ ±0 

Results for commit 77d882a. ± Comparison against base commit ec45778.

♻️ This comment has been updated with latest results.

[suresh-prakash]

Good optimisation.