[website] Move 'Development Guide' to 'community' (#539)

Author: gyang94

.gitignore

@@ -36,3 +36,4 @@ website/package-lock.json
 website/versioned_docs
 website/versioned_sidebars
 website/versions.json
+website/pnpm-lock.yaml

website/docs/dev/_category_.json website/community/dev/_category_.jsonwebsite/docs/dev/_category_.json renamed to website/community/dev/_category_.json

@@ -1,4 +1,4 @@
 {
   "label": "Development Guide",
-  "position": 9
+  "position": 4
 }

website/docs/dev/building.md website/community/dev/building.mdwebsite/docs/dev/building.md renamed to website/community/dev/building.md

@@ -24,4 +24,4 @@ With built-in replication for fault tolerance, horizontal scalability, and advan
 - [Architecture](concepts/architecture.md): Learn about Fluss's architecture.
 - [Table Design](table-design/overview.md): Explore Fluss's table types, partitions and buckets.
 - [Lakehouse](streaming-lakehouse/overview.md): Integrate Fluss with your Lakehouse to bring low-latency data to your Lakehouse analytics.
-- [Development](dev/ide-setup.md): Set up your development environment and contribute to the community.
+- [Development](/community/dev/ide-setup): Set up your development environment and contribute to the community.