add shared

shared/schema/UserSettings.ts

@@ -0,0 +1,14 @@
+import { model, Schema, Types } from 'mongoose';
+
+export type TUserSettings = {
+    user_id: Schema.Types.ObjectId,
+    active_project_id: Schema.Types.ObjectId
+}
+
+const UserSettingsSchema = new Schema<TUserSettings>({
+    user_id: { type: Types.ObjectId, unique: true, index: 1 },
+    active_project_id: Schema.Types.ObjectId,
+});
+
+export const UserSettingsModel = model<TUserSettings>('user_settings', UserSettingsSchema);
+