#658: Add support for INCRBYFLOAT command

[hash-f]

This PR introduces the INCRBYFLOAT command implementation along with corresponding unit and integration tests.

Key changes:

• Implemented INCRBYFLOAT command to increment the value of a key by a floating-point value. This command handles:
  • Non-existent keys (initializes with the increment value).
  • Existing keys with integer or floating-point values.
  • Edge cases such as non-numeric values and value overflow to infinity.
• Added comprehensive integration tests to cover various scenarios, including:
  • Incrementing non-existent keys.
  • Handling integer and floating-point values.
  • Incrementing with both positive and negative values.
  • Handling errors for non-numeric or inappropriate values.

Closes: #658

[hash-f]

@AshwinKul28, please review.

[hash-f]

@JyotinderSingh @lucifercr07, requesting your review

[JyotinderSingh]

Thanks for adding support for INCRBYFLOAT, @hash-f. The changes look good and well-tested, appreciate the efforts around keeping the behavior consistent with redis.

Approved.