Create longhorn.md

[gismo2004]

Description

⚒️ Fixes #

⚙️ Type of change

• [x] ⚙️ Feature/App addition
• [ ] 🪛 Bugfix
• [ ] ⚠️ Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] 🔃 Refactor of current code

🧪 How Has This Been Tested?

📃 Notes:

✔️ Checklist:

• [ ] ⚖️ My code follows the style guidelines of this project
• [ ] 👀 I have performed a self-review of my own code
• [ ] #️⃣ I have commented my code, particularly in hard-to-understand areas
• [ ] 📄 I have made corresponding changes to the documentation
• [ ] ⚠️ My changes generate no new warnings
• [ ] 🧪 I have added tests to this description that prove my fix is effective or that my feature works
• [ ] ⬆️ I increased versions for any altered app according to semantic versioning
• [ ] I made sure the title starts with feat(chart-name):, fix(chart-name): or chore(chart-name):

➕ App addition

If this PR is an app addition please make sure you have done the following.

• [ ] 🖼️ I have added an icon in the Chart's root directory called icon.png

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Please don't blindly check all the boxes. Read them and only check those that apply. Those checkboxes are there for the reviewer to see what is this all about and the status of this PR with a quick glance.

[PrivatePuffin]

@gismo2004 We prefer it if you dont open PRs unless you also are open to implementing review feedback.