[NEB-85] Portal: Update Nebula sidebar grouping (#6378)

Author: MananTank

apps/portal/src/app/nebula/sidebar.tsx

@@ -68,55 +68,43 @@ export const sidebar: SideBar = {
       icon: <Braces />,
       links: [
         {
-          name: "GET",
+          name: "Chat",
           expanded: true,
           links: [
             {
-              name: "List Sessions",
-              href: "/nebula/api-reference/list-session",
+              name: "Send Message",
+              href: "/nebula/api-reference/chat",
             },
             {
-              name: "Get Session",
-              href: "/nebula/api-reference/get-session",
+              name: "Execute Action",
+              href: "/nebula/api-reference/execute",
             },
           ],
         },
         {
-          name: "POST",
+          name: "Session",
           expanded: true,
           links: [
             {
-              name: "Send Message",
-              href: "/nebula/api-reference/chat",
+              name: "List Sessions",
+              href: "/nebula/api-reference/list-session",
             },
             {
-              name: "Execute Action",
-              href: "/nebula/api-reference/execute",
+              name: "Get Session",
+              href: "/nebula/api-reference/get-session",
             },
             {
               name: "Create Session",
               href: "/nebula/api-reference/create-session",
             },
-            {
-              name: "Clear Session",
-              href: "/nebula/api-reference/clear-session",
-            },
-          ],
-        },
-        {
-          name: "PUT",
-          expanded: true,
-          links: [
             {
               name: "Update Session",
               href: "/nebula/api-reference/update-session",
             },
-          ],
-        },
-        {
-          name: "DELETE",
-          expanded: true,
-          links: [
+            {
+              name: "Clear Session",
+              href: "/nebula/api-reference/clear-session",
+            },
             {
               name: "Delete Session",
               href: "/nebula/api-reference/delete-session",