feat: add backend server

server/model/standard.js

@@ -0,0 +1,31 @@
+import mongoose from 'mongoose'
+
+const StandardSchema = new mongoose.Schema(
+    {
+        batch: {
+            type: String,
+            require: true,
+            unique: true,
+        },
+        im: {
+            type: String,
+        },
+        ass: {
+            type: String,
+        },
+        calibration_date: {
+            type: Date,
+        },
+        expire_date: {
+            type: Date,
+        },
+        location: {
+            type: String,
+        },
+    },
+    { timestamps: true }
+)
+
+const Standard = mongoose.model('Standard', StandardSchema)
+
+export default Standard