🩹 [Patch]: Add try/finally blocks

[MariusStorhaug]

Description

This pull request includes changes to the action.yml and the addition of a new script file to improve the robustness and cleanliness of the GitHub Action's execution.

• Fixes 🩹 [Patch]: Set GitHub-Script envvar to $false when done with the action #37

Improvements to GitHub Action execution:

• action.yml: Modified the run block to include a try block for executing scripts and a finally block to ensure the cleanup script is always executed. This change enhances the robustness of the script execution.

Addition of cleanup script:

• scripts/clean.ps1: Added a new PowerShell script to handle cleanup tasks, including logging debug information and resetting environment variables. This ensures that the environment is properly cleaned up after the action 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