fix: don't create output directory for commands that don't produce output

[harp-intel]

This pull request refactors how and when the output directory is created in the application. The main improvement is to avoid creating the output directory for commands that do not generate output files, which helps prevent unnecessary filesystem operations and potential permission errors. Additionally, the createOutputDir function was moved within the file for better organization.

Logic improvements for output directory creation:

• Added logic to skip creating the output directory for the config, update, and certain modes of the metrics command (such as when --live, --prometheus-server, --prometheus-server-addr, or --list flags are set), since these do not produce output files. [1] [2]

Code organization:

• Moved the createOutputDir function to a later position in the file for improved code organization and readability. [1] [2]