Add member model

frontend/models/member.ts

@@ -0,0 +1,26 @@
+export class MemberItem {
+  constructor(
+    public id: number,
+    public user: number,
+    public role: number,
+    public username: string,
+    public rolename: string
+  ) {}
+
+  static valueOf(
+    { id, user, role, username, rolename }:
+    { id: number, user: number, role: number, username: string, rolename: string }
+  ): MemberItem {
+    return new MemberItem(id, user, role, username, rolename)
+  }
+
+  toObject(): Object {
+    return {
+      id: this.id,
+      user: this.user,
+      role: this.role,
+      username: this.username,
+      rolename: this.rolename
+    }
+  }
+}