Add urlPostProcessing with versionNumberInFilename for embedded content
Ticket on Forge: https://forge.typo3.org/issues/63007
Author: Stefan Neufeind
Description:
Core allows to set [FE][versionNumberInFilename] to either embed (add timestamp before fileextension) or querystring (append as a get-parameter).
It could be useful to offer this as well for post-processing of files referenced in CSS-files. This way graphics etc. could be cached a whole lot longer. In case cache is cleared, CSS is regenerated and scriptmerger finds the files are different meanwhile, they will get a new URL and as such will immediately be cached new.