Remove outdated edge gateway object classes, add new agent implementation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/openapi.yaml

@@ -2195,6 +2195,17 @@ paths:
                       two_factor_enabled:
                         type: boolean
                         description: Indicates if 2FA is enabled for this account
+                      runtime_config:
+                        type: object
+                        properties:
+                          economic:
+                            type: object
+                            properties:
+                              transaction_draft_customer_number:
+                                type: integer
+                                nullable: true
+                            additionalProperties: false
+                        additionalProperties: true
         '400':
           $ref: '#/components/responses/BadRequest'
         '401':
@@ -12041,12 +12052,13 @@ components:
       type: object
       properties:
         module: { type: string, enum: [economic] }
-        variable: { type: string, enum: [adminFeeMonthly, adminFeeOrder, feeProductId, invoiceLayoutNumber, paymentTermsNumber] }
+        variable: { type: string, enum: [adminFeeMonthly, adminFeeOrder, feeProductId, invoiceLayoutNumber, paymentTermsNumber, transactionDraftCustomerNumber] }
         type: { type: string, enum: [string, int] }
         value:
           oneOf:
             - type: string
             - type: integer
+          nullable: true
       required: [module, variable, type, value]
 
     RecaptchaConfigEntry: