TYPO3 Core

I try to define constants only at one place.

Feature-wish
I have defined a public constant in my extension. `vendor\myextension\config\SelfConst::MY_CONST` has the value 2.
I want to transfer that value into the constants of the typoscript as a default value.
The typoscript should look something like this.

lib.foo.data = getConst : vendor\myextension\config\SelfConst::MY_CONST

Wish Additional Viewhelper
A viewhelper would be helpfull, which allows the output of public php-constants in the fluid-template.

<div><f:const>Vendor\MyExt\SelfConstClass::FOO</f:const></div>

(see attached code as example - the namespace must be modified)