(chore) Refactor error handling

[jb-balaji]

Refactor error handling in multiple source files to improve logging and consistency

[Copilot]

Pull Request Overview

This PR refactors error handling across multiple source files to improve logging consistency and code maintainability. The changes standardize error message formatting, fix unreachable code issues, and consolidate return codes.

Key changes:

• Added descriptive prefixes to error messages for better context
• Removed unreachable code after throw statements
• Standardized exception handling patterns with proper const qualifiers
• Replaced std::cout with slog::err for consistent logging

Reviewed Changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
sample/src/pipeline_with_params.cpp	Added "Pipeline error:" prefix to exception messages for clearer context
sample/src/parameters.cpp	Removed unreachable return statement, added error prefix, standardized return codes
sample/src/image_people_server.cpp	Replaced std::cout with slog::err, added const to exception catch, added missing return statements
sample/src/image_object_server.cpp	Replaced std::cout with slog::err, added const to exception catch, added missing return statements
openvino_wrapper_lib/src/inputs/realsense_camera.cpp	Removed unreachable return statement, added new exception handler with descriptive error messages

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