Add Google Calendar sync: OAuth connect flow, dedicated Бронирования calendar, best-effort event create/update/delete on booking changes

src/lib/db/migrations/meta/_journal.json

@@ -8,6 +8,13 @@
       "when": 1788002528986,
       "tag": "0000_flippant_the_enforcers",
       "breakpoints": true
+    },
+    {
+      "idx": 1,
+      "version": "6",
+      "when": 1788003717768,
+      "tag": "0001_simple_invisible_woman",
+      "breakpoints": true
     }
   ]
 }