feat; change model names (Material -> WidgetFamily)

src/models/WidgetFamily.js

@@ -0,0 +1,27 @@
+const mongoose = require("mongoose");
+
+const schema = new mongoose.Schema(
+  {
+    name: {
+      type: String,
+      required: true,
+      trim: true,
+    },
+    parent: {
+      type: mongoose.Schema.Types.ObjectId,
+      ref: "WidgetFamily",
+    },
+    inventory: {
+      type: mongoose.Schema.Types.ObjectId,
+      ref: "Inventory",
+      required: true
+    },
+  },
+  {
+    timestamps: true,
+  }
+);
+
+const WidgetFamily = mongoose.model("WidgetFamily", schema);
+
+module.exports = WidgetFamily;