feat(auth): add Zitadel OAuth Provider (#5490)

app/Providers/EventServiceProvider.php

@@ -14,6 +14,7 @@ use SocialiteProviders\Discord\DiscordExtendSocialite;
 use SocialiteProviders\Google\GoogleExtendSocialite;
 use SocialiteProviders\Infomaniak\InfomaniakExtendSocialite;
 use SocialiteProviders\Manager\SocialiteWasCalled;
+use SocialiteProviders\Zitadel\ZitadelExtendSocialite;
 
 class EventServiceProvider extends ServiceProvider
 {
@@ -31,6 +32,7 @@ class EventServiceProvider extends ServiceProvider
             DiscordExtendSocialite::class.'@handle',
             GoogleExtendSocialite::class.'@handle',
             InfomaniakExtendSocialite::class.'@handle',
+            ZitadelExtendSocialite::class.'@handle',
         ],
     ];