Move docs over. (#3760)

* Docs

* Update docs.yaml

* Delete docs/LICENCE

* Delete docs/README.md

* Update module path in go.mod

docs/content/dev/features/Legacy-Windows-Panels/_index.md

@@ -0,0 +1,16 @@
+---
+weight: 3
+---
+
+## Features
+
+### Legacy Windows Panels
+
+- [Control Panel](control/)
+- [Network Connections](network/)
+- [Power Panel](power/)
+- [Printer Settings](printer/)
+- [Region](region/)
+- [Sound Settings](sound/)
+- [System Properties](system/)
+- [User Accounts](user/)