Feat : Setup cloudflare worker for cloud endpoint

cloud/migrations/0001_init.sql

@@ -0,0 +1,9 @@
+-- Migration: Create machines table
+CREATE TABLE IF NOT EXISTS machines (
+  machineId TEXT PRIMARY KEY,
+  data TEXT NOT NULL,
+  updatedAt TEXT NOT NULL
+);
+
+-- Index for faster lookups
+CREATE INDEX IF NOT EXISTS idx_machines_updatedAt ON machines(updatedAt);