feat: add new endpoints and improve error logs

[Programador-jr]

Description:
This PR introduces the following additions and improvements to the API:

• New fields Endpoint: Added support for the fields parameter, allowing users to select specific fields in the response.
• Dynamic Filters: Introduced dynamic filters to enable more flexible queries based on attributes like primaryMuscles, secondaryMuscles, and level.
• New Error Logs: Created detailed logs to validate the fields, lang, page, and limit parameters, ensuring clearer feedback in case of errors.
• Validation and Fixes:
  • Enhanced validation for empty or invalid fields parameters, returning a 400 Bad Request error.
  • Adjusted default pagination to start at page 0, aligning with common programming practices.

Checklist:

• Added support for the fields parameter.
• Implemented dynamic filters for advanced queries.
• Improved error logs for parameter validation.
• Tested edge cases for all parameters and API responses.

Impact:
These changes enhance the API’s flexibility and robustness, providing a better experience for developers and end users.

[vercel]

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Name	Status	Preview	Updated (UTC)
exercise-api	✅ Ready (Inspect)	Visit Preview	Jan 26, 2025 11:06pm