Added more behavior to servers list

src/servers/services/index.js

@@ -0,0 +1,19 @@
+const PREFIX = 'shlink';
+const buildPath = path => `${PREFIX}.${path}`;
+
+export class ServersService {
+  constructor(storage) {
+    this.storage = storage;
+  }
+
+  listServers = () => {
+    return JSON.parse(this.storage.getItem(buildPath('servers')) || '{}');
+  };
+
+  findServerById = serverId => {
+    const servers = this.listServers();
+    return servers[serverId];
+  }
+}
+
+export default new ServersService(localStorage);