Add DSH Studio to Open Source projects

[Moresyl]

General checklist

• The project is added to the appropriate category.
• The project is added at the end of the list.
• The description is short, clear, and written as one sentence with fewer than 24 words.
• The description contains no emojis, irrelevant wording, links, or parentheses.

Open Source project

• The link points to the GitHub repository.
• The README includes a project description and screenshots.
• Documentation is available in English.
• The project is active and maintained.
• The repository accepts contributions.
• The project is non-commercial.

This submission is for Projects using Vite → Open Source. The Plugins/Tools, Starter Templates, and Apps/Websites checklists are not applicable.