feat: beta channels for core and plugins with one stable/beta release workflow

drizzle/postgres/0069_plugin_channel.sql

@@ -0,0 +1 @@
+ALTER TABLE "plugins" ADD COLUMN "channel" text DEFAULT 'stable' NOT NULL;

drizzle/postgres/meta/_journal.json

@@ -484,6 +484,13 @@
       "when": 1791256340388,
       "tag": "0068_plugin_pinned_version",
       "breakpoints": true
+    },
+    {
+      "idx": 69,
+      "version": "7",
+      "when": 1791388888397,
+      "tag": "0069_plugin_channel",
+      "breakpoints": true
     }
   ]
 }