feat(#38): submitted

[h1alexbel]

closes #38

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PR-Codex overview

This PR updates the key field name from "body" to "submitted" in JSON files and Java code related to code reviews.

Detailed summary

• Updated field name "body" to "submitted" in JSON files for clarity
• Refactored Java code to use "submitted" instead of "body" for consistency

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[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 31.95%. Comparing base (6da8c85) to head (d08c57d).

Files	Patch %	Lines
...racehub/codereview/action/github/WithComments.java	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #39 +/- ## ========================================= Coverage 31.95% 31.95% Complexity 10 10 ========================================= Files 9 9 Lines 97 97 Branches 2 2 ========================================= Hits 31 31 Misses 64 64 Partials 2 2 ```

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