Enable creation date in the footer

[alelom]

There is a way to display the page creation date in the footer, but I couldn't make this feature work.

See the issue I raised on Material for MkDocs: squidfunk/mkdocs-material#4697 and the subsequent issue I raised on the plug-in they mention: timvink/mkdocs-git-revision-date-localized-plugin#103

It's worth updating Material for MkDocs to its latest version and check if this can now work correctly, as some time has passed since then.