feat: add from/to json for uint/uint64

[peter-jerry-ye]

For FromJson and ToJson, we only guarantee the roundtrip property.

So for UInt64 and Int64, we'll be using String as representation, and for UInt and Int, we'll be using Number as representation.

[peter-jerry-ye-code-review]

‼️ This code review is generated by a bot. Please verify the content before trusting it.

Here are three observations from the provided git diff output:

1. Inconsistent JSON Representation for Int64 and UInt64:

   • The Int64::to_json and UInt64::to_json methods now convert the values to strings (String::to_json(self.to_string())), whereas previously they were converted to Number. This change might break existing code that expects Int64 and UInt64 values to be serialized as Number in JSON. This inconsistency should be documented clearly, and any dependent code should be updated accordingly.

2. Potential Overflow Issue in UInt::from_json:

   • In the UInt::from_json implementation, there is no explicit handling for overflow when converting a Number to UInt. For example, if the Number value is larger than the maximum value that UInt can hold, it might result in unexpected behavior. Consider adding checks or documentation to handle such cases.

3. Copyright Year Update:

   • The copyright year has been updated from 2024 to 2025 in multiple files. While this is a minor change, ensure that this update is intentional and consistent across all relevant files in the project. If this change is not intentional, it should be reverted to avoid confusion.

These are the key points to consider based on the provided diff. Let me know if you need further clarification or assistance!

[coveralls]

Pull Request Test Coverage Report for Build 4691

Details

• 7 of 17 (41.18%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.06%) to 82.928%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
builtin/json.mbt	0	3	0.0%
json/from_json.mbt	7	14	50.0%

Totals
Change from base Build 4690:	-0.06%
Covered Lines:	4770
Relevant Lines:	5752

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💛 - Coveralls

[peter-jerry-ye]

Waiting for #1419