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/sodium_compat/namespaced/Crypto.php

@@ -0,0 +1,7 @@
+<?php
+namespace ParagonIE\Sodium;
+
+class Crypto extends \ParagonIE_Sodium_Crypto
+{
+
+}