Extend database with more tables, rewrite API doc, improve API endpoints

software/backend/data/brands.json

@@ -0,0 +1,40 @@
+{
+  "data": [
+    {
+      "id": 0,
+      "name": "Lenovo"
+    },
+    {
+      "id": 1,
+      "name": "Puma"
+    },
+    {
+      "id": 2,
+      "name": "George Orwell"
+    },
+    {
+      "id": 3,
+      "name": "Aldous Huxley"
+    },
+    {
+      "id": 4,
+      "name": "Dell"
+    },
+    {
+      "id": 5,
+      "name": "Fender"
+    },
+    {
+      "id": 6,
+      "name": "ESP"
+    },
+    {
+      "id": 7,
+      "name": "Pearl"
+    },
+    {
+      "id": 8,
+      "name": "Apple"
+    }
+  ]
+}