I am using Sitecore 9.3, SXA. I want to make some of the current config settings configurable from within Sitecore. I have created a template with all of the fields (e.g. MediaResponse single text field) and added it to the main site settings. I want to replace the current corresponding settings' values with the values in these fields.
e.g. I want replace the below value with the MediaResponse field value
<setting name="MediaResponse.MaxAge" value="5.00:00:00"/>