Add Vitest and ofetch

[fauzan171]

Description

Added two popular JavaScript tools that were missing from the collection:

Testing Frameworks:

• Vitest - A blazing fast Vite-native unit test framework. Features out-of-box ESM, TypeScript, and JSX support. Widely adopted as the modern alternative to Jest for Vite-based projects. 14k+ GitHub stars.

Misc (API):

• ofetch - A better fetch API by the UnJS team that works uniformly in Node.js, browsers, and workers. Supports JSON parsing, retries, timeouts, and interceptors out of the box. Part of the Nuxt/UnJS ecosystem.

Why:

• Vitest has become one of the most popular testing frameworks in the JS ecosystem, especially for Vite-based projects. It was missing from the Testing Frameworks section.
• ofetch is the modern, universal alternative to both fetch and axios, from the creators of Nuxt.js. It fills a gap in the HTTP client landscape.

Checklist

• Format matches existing entries
• Tools are actively maintained and open source
• Not duplicates of existing entries