Make backend login stateless

backend/src/models/LoginSRPDetail.ts

@@ -0,0 +1,23 @@
+import mongoose, { Schema, model } from 'mongoose';
+
+const LoginSRPDetailSchema = new Schema(
+	{
+		clientPublicKey: {
+			type: String,
+			required: true
+		},
+		email: {
+			type: String,
+			required: true,
+			unique: true
+		},
+		serverBInt: { type: mongoose.Schema.Types.Buffer },
+		expireAt: { type: Date }
+	}
+);
+
+const LoginSRPDetail = model('LoginSRPDetail', LoginSRPDetailSchema);
+
+// LoginSRPDetailSchema.index({ "expireAt": 1 }, { expireAfterSeconds: 0 });
+
+export default LoginSRPDetail;