✨(project) Django boilerplate

This commit introduces a boilerplate inspired by https://github.com/numerique-gouv/impress.
The code has been cleaned to remove unnecessary Impress logic and dependencies.

Changes made:
- Removed Minio, WebRTC, and create bucket from the stack.
- Removed the Next.js frontend (it will be replaced by Vite).
- Cleaned up impress-specific backend logics.

The whole stack remains functional:
- All tests pass.
- Linter checks pass.
- Agent Connexion sources are already set-up.

Why clear out the code?

To adhere to the KISS principle, we aim to maintain a minimalist codebase. Cloning Impress
allowed us to quickly inherit its code quality tools and deployment configurations for staging,
pre-production, and production environments.

What’s broken?
- The tsclient is not functional anymore.
- Some make commands need to be fixed.
- Helm sources are outdated.
- Naming across the project sources are inconsistent (impress, visio, etc.)
- CI is not configured properly.

This list might be incomplete. Let's grind it.

.github/ISSUE_TEMPLATE/Support_question.md

@@ -0,0 +1,22 @@
+---
+name: 🤗 Support Question
+about: If you have a question 💬, or something was not clear from the docs!
+
+---
+
+<!-- ^ Click "Preview" for a nicer view! ^
+We primarily use GitHub as an issue tracker. If however you're encountering an issue not covered in the docs, we may be able to help! -->
+
+---
+
+Please make sure you have read our [main Readme](https://github.com/numerique-gouv/impress).
+
+Also make sure it was not already answered in [an open or close issue](https://github.com/numerique-gouv/impress/issues).
+
+If your question was not covered, and you feel like it should be, fire away! We'd love to improve our docs! 👌
+
+**Topic**
+What's the general area of your question: for example, docker setup, database schema, search functionality,...
+
+**Question**
+Try to be as specific as possible so we can help you as best we can. Please be patient 🙏