Revamping the Harbor Cli

[amands98]

Enhance the current CLI code by implementing the following measures for a smoother development experience, easier CLI installations, a structured release cycle, and more:

• Structure the project directory.
• Creating a Release
• Improve the release channel for the harbor cli, Integrated GitHub release workflows for streamlined version management.
• Automate the harbor upgrade in package manager
• Improve the error message
• Support for e2e tests & docs
• Automation of docs generation
• Implemented support for codecov to ensure comprehensive code coverage
• Discover more available subcommands for harbor-cli

// @Vad1mo @OrlinVasilev

[Shivkant-Chauhan]

hey @amands98, it seems that this issue is for the Harbor CLI project that is listed under the LFX mentorship program -- link.