Implement new structure

src/common/http.ts

@@ -0,0 +1,24 @@
+export enum HttpCode {
+  Ok = 200,
+  Redirect = 302,
+  NotFound = 404,
+  BadRequest = 400,
+  Unauthorized = 401,
+  LargePayload = 413,
+  ServerError = 500,
+}
+
+export class HttpError extends Error {
+  public constructor(message: string, public readonly code: number) {
+    super(message)
+    this.name = this.constructor.name
+  }
+}
+
+export enum ApiEndpoint {
+  applications = "/applications",
+  files = "/files",
+  login = "/login",
+  recent = "/recent",
+  session = "/session",
+}