Remove outdated edge gateway object classes, add new agent implementation

Transitioned from obsolete gateway object classes (`edge_gateway_shell_action_jobs_o`, `edge_gateway_shell_events_o`, `edge_gateway_shell_sessions_o`, `edge_gateway_update_jobs_o`) to the new agent implementation (`edge-gateway-agent/agent.php`).

services/nginx/app/classes/stripe.php

@@ -10,6 +10,7 @@ require_once WD . '/modules/stripe/endpoints/stripe_endpoint_prices.php';
 require_once WD . '/modules/stripe/endpoints/stripe_endpoint_invoice.php';
 require_once WD . '/modules/stripe/endpoints/stripe_endpoint_readers.php';
 require_once WD . '/modules/stripe/endpoints/stripe_endpoint_payment_intents.php';
+require_once WD . '/classes/stripe_fake_http_client.php';
 
 
 // Require all helper classes
@@ -29,6 +30,7 @@ use stripe\endpoints\stripe_endpoint_prices;
 use stripe\endpoints\stripe_endpoint_product;
 use stripe\endpoints\stripe_endpoint_readers;
 use stripe\stripe_c;
+use Stripe\ApiRequestor;
 use Stripe\StripeClient;
 
 /**
@@ -104,6 +106,13 @@ class stripe implements stripe_i
     {
         // Get the stripe client
         if (!isset($this->client)) {
+            if (self::isFakeModeEnabled()) {
+                ApiRequestor::setHttpClient(new stripe_fake_http_client());
+                $this->client = new StripeClient([
+                    'api_key' => 'sk_test_fake'
+                ]);
+                return $this->client;
+            }
             // Require the module to be enabled
             self::requireModuleEnabled();
             // Require the secret key to be set
@@ -118,6 +127,11 @@ class stripe implements stripe_i
         return $this->client;
     }
 
+    private static function isFakeModeEnabled(): bool
+    {
+        return getenv('STRIPE_FAKE_MODE') === '1';
+    }
+
     /**
      * @inheritDoc
      * @throws Exception
@@ -153,4 +167,4 @@ class stripe implements stripe_i
             throw new Exception('Invalid publishable key');
         }
     }
-}
+}