refactor: declutter package

[kekavc24]

When I first implemented this package, I released it to simply bump versions in my own personal projects. Overtime, I continually added features that I felt would be helpful. Tried making this package a Jack-of-all-trades. Additionally, I may have over-engineered it a bit. This made my maintenance cycles (if any) quite tricky.

Description

This PR:

1. Removes CLI functionality that doesn't align with this package's main function, that is, bumping your project version.
2. Adds a simpler and more straightforward API to bump versions

Type of Change

• ✨ New feature (non-breaking change which adds functionality)
• 🛠️ Bug fix (non-breaking change which fixes an issue)
• ❌ Breaking change (fix or feature that would cause existing functionality to change)
• 🧹 Code refactor
• ✅ Build configuration change
• 📝 Documentation
• 🗑️ Chore