Added new db env management options

schemas/settingsSchema.js

@@ -0,0 +1,9 @@
+const { Schema, model } = require('mongoose');
+
+const settingsSchema = new Schema({
+    _id: Schema.Types.ObjectId,
+    name: { type: String, required: true },
+    value: { type: String, required: true },
+});
+
+module.exports = model('settings', settingsSchema, 'settings');