feat: move desktop, status, import, audit and branding features into plugins

drizzle/sqlite/0069_normal_ozymandias.sql

@@ -0,0 +1,4 @@
+-- recent_activity moved to the homepage plugin, whose migration renames it to
+-- p_homepage_recent_activity. Dropping it here would lose every entry, so this
+-- only stops drizzle tracking it. SELECT 1 because MySQL rejects an empty query.
+SELECT 1;