Added API for externalAPI, added env for clients

src/client/dto/external-inquiries-live.dto.ts

@@ -0,0 +1,10 @@
+import { ApiProperty } from "@nestjs/swagger";
+
+export class SetExternalInquiriesLiveDto {
+  @ApiProperty({
+    description:
+      "When true, SandHub/Tejarat live HTTP inquiries run. When false, mocked inquiry data is used.",
+    example: true,
+  })
+  enabled: boolean;
+}