feat: move sso and ldap logins into plugins (C2)

drizzle/sqlite/0049_glamorous_hemingway.sql

@@ -0,0 +1,4 @@
+-- sso_providers moves to the sso plugin's adopted table at activation, and
+-- its LDAP rows are copied into the ldap plugin by a boot migration after
+-- this runs. Dropping it here would lose the data first.
+SELECT 1;

drizzle/sqlite/meta/_journal.json

@@ -344,6 +344,13 @@
       "when": 1790285909308,
       "tag": "0048_cold_miek",
       "breakpoints": true
+    },
+    {
+      "idx": 49,
+      "version": "6",
+      "when": 1790287989611,
+      "tag": "0049_glamorous_hemingway",
+      "breakpoints": true
     }
   ]
 }