refactor(hub): replace sections with sources list and map

- Remove Offers, Suppliers, Products, NearbyConnections sections
- Add product filter dropdown
- Show sources list with routes from findProductRoutes API
- Display routes on map using RequestRoutesMap component
- Add i18n keys for sources section (en/ru)

i18n/locales/en/catalogHub.json

@@ -42,6 +42,12 @@
       "byRoad": "By Road",
       "byRail": "By Rail",
       "empty": "No connections available"
+    },
+    "sources": {
+      "title": "Available sources",
+      "selectProduct": "Select a product",
+      "empty": "No sources for this product",
+      "loading": "Loading routes..."
     }
   }
 }