feat: immersive onboarding (#189)

* feat: change the default onboarding column

* feat: add newsfeed onboarding

* feat: add topic onboarding

* feat: add group onboarding

* chore: polish and format

* feat: rename foryou to topic

* fix: array

src-tauri/resources/system_columns.json

@@ -1,4 +1,7 @@
 [
   { "label": "onboarding", "name": "Onboarding", "content": "/onboarding" },
+  { "label": "lume_newsfeed", "name": "Newsfeed", "content": "/newsfeed" },
+  { "label": "lume_topic", "name": "Topic", "content": "/topic" },
+  { "label": "lume_group", "name": "Group", "content": "/group" },
   { "label": "open", "name": "Open", "content": "/open" }
 ]