feat: add last_used_machine column to customers

migrations/1721313145136-customer-last-used-machine.js

@@ -0,0 +1,9 @@
+const db = require('./db')
+
+exports.up = function (next) {
+  db.multi(['ALTER TABLE customers ADD COLUMN last_used_machine TEXT REFERENCES devices (device_id)'], next)
+}
+
+exports.down = function (next) {
+  next()
+}