docs: add cloud projects documentation (#12730)

* docs: add cloud projects documentation

* fixes

* more fixes

* fix details about configurations

* last fixes

* small fix

* remove environments page

www/apps/cloud/generated/sidebar.mjs

@@ -28,6 +28,14 @@ export const generatedSidebars = [
             "title": "Organizations",
             "path": "/organizations",
             "children": []
+          },
+          {
+            "loaded": true,
+            "isPathHref": true,
+            "type": "link",
+            "title": "Projects",
+            "path": "/projects",
+            "children": []
           }
         ]
       }