Add new index for Gephi desktop

Author: mbastian

gephi-desktop/docs/User_Manual/Contributing.md

@@ -0,0 +1,18 @@
+---
+id: Contributing
+title: How To Contribute
+sidebar_position: 10
+---
+
+We welcome contributors to enhance this documentation.
+
+Contributing to the documentation requires to write markdown documents and posting them on this github repository.
+
+To fix/edit existing page you can use the **edit this page** button which appears on all pages footers.
+
+To propose new pages, feel free to open a Github Pull Request.
+
+If you're interested but need help please contact us on the [Gephi community matrix chatroom](https://matrix.to/#/!XKyOZNGdXvoRWJbPCL:matrix.org). Actually before any consistent contribution (such as creating new pages), it would be better to get in touch with the Gephi Team.
+
+Thank you in advance for your help!
+

gephi-desktop/docs/User_Manual/Import/CSV_Format.md

@@ -1,6 +1,6 @@
 ---
 id: CSV_Format
-title: CSV Format
+title: CSV
 sidebar_position: 5
 ---
 

gephi-desktop/docs/User_Manual/index.md

@@ -5,4 +5,22 @@ sidebar_position: 1
 slug: /
 ---
 
-Welcome to the official Gephi documentation resource.
+:::info Work in Progress
+This documentation is currently under active development. We welcome your feedback and ideas!
+
+**Report documentation issues or suggestions:** [https://github.com/gephi/gephi-documentation/issues](https://github.com/gephi/gephi-documentation/issues)
+:::
+
+## Documentation Progress
+
+**Completed:**
+- ✅ Migrate relevant pages from the legacy wiki and update content to match the latest Gephi version
+- ✅ Deprecate old wiki and [archive it](https://github.com/gephi/gephi-wiki-legacy)
+
+**In Progress:**
+- 🚧 Launch new documentation portal
+
+**Coming Soon:**
+- 📝 Harness ideas from the community on how to improve the documentation
+- 📝 Prioritize needs and add new pages
+- 🔍 Add search feature to this documentation