feat: turn session recording into a plugin (B13)

drizzle/sqlite/0038_broad_avengers.sql

@@ -0,0 +1,5 @@
+-- session_recordings moved to the session-recording plugin, whose first
+-- migration renames it. Dropping it here would lose every recording, so
+-- this only stops drizzle tracking it. SELECT 1 because MySQL rejects an
+-- empty query.
+SELECT 1;

drizzle/sqlite/meta/_journal.json

@@ -267,6 +267,13 @@
       "when": 1790224429343,
       "tag": "0037_burly_enchantress",
       "breakpoints": true
+    },
+    {
+      "idx": 38,
+      "version": "6",
+      "when": 1790225599344,
+      "tag": "0038_broad_avengers",
+      "breakpoints": true
     }
   ]
 }