feat: add option to enable or disable module

[mod08]

🔗 Linked issue

• [ ] 📖 Documentation (updates to the documentation or readme)
• [ ] 🐞 Bug fix (a non-breaking change that fixes an issue)
• [ ] 👌 Enhancement (improving an existing functionality)
• [ ] ✨ New feature (a non-breaking change that adds functionality)
• [ ] 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• [x] ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description Added option to enable or disable the module. Can be very usefull if you don't want to disable the tag in development or staging. Had to move the pixels configuration to subkey inside the metapixel object which makes it a breaking change.

[mod08]

Yes that's an option as well. Just thought that it would be nicer to have an option to enable/disable the module (don't load the meta pixel at all).