🚀 [Feature]: Make Script optional, and support consecutive runs

[MariusStorhaug]

Description

• Script is no longer required.
• Update script to check if GitHub module is installed and imported, to avoid doing that if it already is installed or imported.
• Add a tests for running without a token, running with version and running consecutive runs.

Type of change

• 📖 [Docs]
• 🪲 [Fix]
• 🩹 [Patch]
• ⚠️ [Security fix]
• 🚀 [Feature]
• 🌟 [Breaking change]

Checklist

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas