feat: turn session recording into a plugin (B13)

drizzle/mysql/0041_wonderful_cargill.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/mysql/meta/_journal.json

@@ -288,6 +288,13 @@
       "when": 1790224430728,
       "tag": "0040_misty_skin",
       "breakpoints": true
+    },
+    {
+      "idx": 41,
+      "version": "5",
+      "when": 1790225600497,
+      "tag": "0041_wonderful_cargill",
+      "breakpoints": true
     }
   ]
 }