docs: Add PHP compatibility table to README (#514)

Author: mtrezza

.github/workflows/ci.yml

@@ -26,11 +26,12 @@ jobs:
     strategy:
       matrix:
         include:
-          - name: PHP 8.1
-            PHP_VERSION: 8.1
           - name: PHP 8.2
             PHP_VERSION: 8.2
+          - name: PHP 8.1
+            PHP_VERSION: 8.1
       fail-fast: false
+    name: Test ${{ matrix.name }}
     steps:
       - uses: actions/checkout@v3
       - name: Use Node.js

README.md

@@ -24,6 +24,7 @@ A library that gives you access to the powerful Parse Server backend from your P
 
 ## Table of Contents <!-- omit in toc -->
 
+- [Compatibility](#compatibility)
 - [Installation](#installation)
   - [Install with Composer](#install-with-composer)
   - [Install with Git](#install-with-git)
@@ -64,6 +65,15 @@ A library that gives you access to the powerful Parse Server backend from your P
   - [Logs](#logs)
 - [Contributing / Testing](#contributing--testing)
 
+## Compatibility
+
+The Parse PHP SDK is continuously tested with the most recent releases of PHP to ensure compatibility. We follow the [PHP Long Term Support plan](https://www.php.net/supported-versions.php) and only test against versions that are officially supported and have not reached their end-of-life date.
+
+| Version | End-of-Life | Compatible |
+|---------|-------------|------------|
+| PHP 8.2 | Dec 2024    | ✅ Yes      |
+| PHP 8.1 | Nov 2023    | ✅ Yes      |
+
 ## Installation
 There are various ways to install and use this sdk. We'll elaborate on a couple here.
 Note that the Parse PHP SDK requires PHP 5.4 or newer. It can also run on HHVM (recommended 3.0 or newer).