Description

Added respects body immutability to ctx.Body() and ctx.BodyRaw() functions.

Related to #2757

Changes Introduced

• Benchmarks: go test -run Test_Ctx_Body -bench=Benchmark_Ctx_Body -benchmem
• Documentation Update: documentation already has full information and comments about body immutability.

Type of Change

• Enhancement (improvement to existing features and functionality)

Checklist

Before you submit your pull request, please make sure you meet these requirements:

• Followed the inspiration of the Express.js framework for new functionalities, making them similar in usage.
• Conducted a self-review of the code and provided comments for complex or critical parts.
• Updated the documentation: documentation already has full information and comments about body immutability.
• Added or updated unit tests to validate the effectiveness of the changes or new features.
• Ensured that new and existing unit tests pass locally with the changes.
• Verified that any new dependencies are essential and have been agreed upon by the maintainers/community.
• Aimed for optimal performance with minimal allocations in the new code.
• Provided benchmarks for the new code to analyze and improve upon.