docs: add Rainbow to "Trusted by" section (#895)

## 📜 Description

Added Rainbow app to "Trusted by" section.

## 💡 Motivation and Context

To keep list of apps up-to-date.

## 📢 Changelog

<!-- High level overview of important changes -->
<!-- For example: fixed status bar manipulation; added new types
declarations; -->
<!-- If your changes don't affect one of platform/language below - then
remove this platform/language -->

### Docs

- added "Rainbow" app to "Trusted by" section.

## 🤔 How Has This Been Tested?

Tested via preview.

## 📸 Screenshots (if appropriate):

<img width="1267" alt="image"
src="https://github.com/user-attachments/assets/8342ca9e-1016-4358-853d-25f4b55faf38"
/>

## 📝 Checklist

- [x] CI successfully passed
- [x] I added new mocks and corresponding unit-tests if library API was
changed

Author: kirillzyusko

docs/src/pages/index.tsx

@@ -53,6 +53,12 @@ const trustedBy = [
     link: "https://github.com/infinitered/ignite",
     name: "Ignite",
   },
+  {
+    img: "https://avatars.githubusercontent.com/u/48327834?s=200&v=4",
+    alt: "Rainbow Mobile App",
+    link: "https://github.com/rainbow-me/rainbow",
+    name: "Rainbow",
+  },
   {
     img: "https://avatars.githubusercontent.com/u/95456295?s=200&v=4",
     alt: "RSSNext Follow app",