[gh] Shell Format Workflow

[michelroegl-brunner]

✍️ Description

This introduces a new Shell Format check to see if a few set standard lines are what we expect. If there are errors ther will be a comment with the offending Line and what should be there.

ADVISE: THIS WILL TRIGGER ON MANY SCRIPTS AT THE MOMENT
We as contributors would have to fix wrong formatted scripts either befor merge of this or when a PR with a Script comes up. This will be anyoing for a few weeks until the standards are met.

In theory we could just sed through the script and correct offending lines automaticaly, but i´m not sure if we really want that.

✅ Prerequisites

Before this PR can be reviewed, the following must be completed:

• Self-review performed – Code follows established patterns and conventions.
• Testing performed – Changes have been thoroughly tested and verified.

🛠️ Type of Change

Select all that apply:

• [] 🐞 Bug fix – Resolves an issue without breaking functionality.
• ✨ New feature – Adds new, non-breaking functionality.
• [] 💥 Breaking change – Alters existing functionality in a way that may require updates.
• [] 🆕 New script – A fully functional and tested script or script set.

📋 Additional Information (optional)

[michelroegl-brunner]

Any look at the code and changes to the checks are welcome, either check out the PR Repo do do it in your editor or in GH Web (File->Edit). Changes will be commited to the branch.