Add Symfony Deprecation Contracts package

- Created CHANGELOG.md to maintain version history.
- Added README.md with usage instructions for the trigger_deprecation() function.
- Initialized composer.json for the Symfony Deprecation Contracts library, specifying dependencies and autoloading.

modules/pshowsso/deps/paragonie/random_compat/psalm-autoload.php

@@ -0,0 +1,9 @@
+<?php
+
+require_once 'lib/byte_safe_strings.php';
+require_once 'lib/cast_to_int.php';
+require_once 'lib/error_polyfill.php';
+require_once 'other/ide_stubs/libsodium.php';
+require_once 'lib/random.php';
+
+$int = random_int(0, 65536);