fix: added dependencies for development. feat: added axios as dependency. feat: added some initial modeals. feat: setup unit testing

src/models/ApiResponse.ts

@@ -0,0 +1,13 @@
+export class ApiResponse<T> {
+  readonly statusCode: number;
+  readonly isSuccessful: boolean;
+  readonly message: string;
+  readonly data: T;
+
+  constructor(statusCode: number, isSuccessful: boolean, message: string, data: T) {
+    this.statusCode = statusCode;
+    this.isSuccessful = statusCode < 400;
+    this.message = message;
+    this.data = data;
+  }
+}