docs: add table of contents to README for improved navigation

Author: lposen

README.md

@@ -10,6 +10,25 @@ message and web push notification campaigns to your customers.
 This SDK helps you integrate your React Native-based iOS and Android apps with
 Iterable. It supports JavaScript and TypeScript.
 
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+<!-- @import "[TOC]" {cmd="toc" depthFrom=2 depthTo=6 orderedList=false} -->
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+- [Requirements](#requirements)
+- [Architecture Support](#architecture-support)
+- [Installation](#installation)
+- [Features](#features)
+- [Sample projects](#sample-projects)
+- [Version mapping](#version-mapping)
+- [Release notes, support and troubleshooting](#release-notes-support-and-troubleshooting)
+- [License](#license)
+- [Want to contribute?](#want-to-contribute)
+
+<!-- /code_chunk_output -->
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 ## Requirements
 
 Iterable's React Native SDK relies on:
@@ -35,7 +54,7 @@ Iterable's React Native SDK relies on:
 
 ## Architecture Support
 
-**Important**: Iterable's React Native SDK currently does not support [React Native's New Architecture](https://reactnative.dev/architecture/landing-page) (Fabric, TurboModules, and Codegen). The SDK is designed to work with the legacy architecture only. If you're using the New Architecture in your React Native application, you may encounter compatibility issues.
+**Important**: Iterable's React Native SDK currently does not support [React Native's New Architecture](https://reactnative.dev/architecture/landing-page) (Fabric, TurboModules, and Codegen). The SDK is designed to work with the **legacy architecture only**. If you're using the New Architecture in your React Native application, you may encounter compatibility issues.
 
 ## Installation