wip: PXE setup for ipxe and okd files in progress

opnsense-config/src/config/config.rs

@@ -70,6 +70,10 @@ impl Config {
         self.shell.upload_folder(source, destination).await
     }
 
+    pub async fn upload_file_content(&self, path: &str, content: &str) -> Result<String, Error> {
+        self.shell.write_content_to_file(content, path).await
+    }
+
     /// Checks in config file if system.firmware.plugins csv field contains the specified package
     /// name.
     ///