v0.0.4

What's Changed

• Refactor error handling and testing, optimize by @VioletCranberry in #6

1. Refactored various functions to enhance error handling.
2. Revised testing strategies and suits.
3. Introduced GoReleaser configuration (instead of relying on GH actions for building binaries).
4. Refactored Cobra structure and commands.
5. Bumped up Go version and dependencies versions.
6. Removed redundant utils package.
7. Updated README.md and fixed markdown rules' violations.
8. Updated related GH actions for releasing and testing.

Full Changelog: v0.0.3...v0.0.4