Function SzConfigTool_addConfigSectionField 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn SzConfigTool_addConfigSectionField(
    config_json: *const c_char,
    section_name: *const c_char,
    field_name: *const c_char,
    field_value_json: *const c_char,
) -> SzConfigTool_result

Add a field to a config section (returns tuple)