Feature: #106415 - Add stdWrap to config.htmlTag.attributes.[attr]

See forge#106415

Description

Each attribute within the TypoScript option config.htmlTag.attributes.[attr] now has all stdWrap possibilities available.

This option is used to control the attributes of the single <html> tag of a rendered page.

Impact

It is now possible to e.g. use a custom userFunc, override or getData via TypoScript:

config.htmlTag.attributes.my-attribute = 123
config.htmlTag.attributes.my-attribute.override = 456
Copied! 
config.htmlTag.attributes.my-attribute = 123
config.htmlTag.attributes.my-attribute.userFunc = MyVendor\\MyExtension\\HtmlTagEnhancer->overrideMyAttribute
Copied!