Feature: #99340 - Add StdWrap properties to config.additionalHeaders

See forge#99340

Description

StdWrap properties have been added to the header directive in config.additionalHeaders.

TypoScript examples

config.additionalHeaders {
    10 {
        header = link: <{path : EXT:site/Resources/Public/Fonts/icon.woff2}>; rel=preload; as=font; crossorigin
        header.insertData = 1
    }

    20 {
        header.data = path : EXT:site/Resources/Public/Fonts/gothic.woff2
        header.wrap = link: <|>; rel=preload; as=font; crossorigin
        replace = 0
    }
}

Impact

It is now possible to sent dynamic HTTP headers with TypoScript, especially headers that contain paths to extension files.