This commit separates the error throwing and logging functionalities in logger.fatal. The logger now solely handles logging messages, while errors are thrown independently using YorkieError.

This commit standardizes the naming conventions for errors starting with 'Err'

This commit replaces all instances of throw new Error with YorkieError to provide more specific and consistent error handling throughout the codebase.

There is a problem of code being verbose with duuplicated logging and error throwing. Removing logger will temproarily resolve the issue.

…g-methods