FR: GDPRs links to be able use in all system

[Jimmi08]

Now are there 2 prefs:
gdpr_privacypolicy
gdpr_termsandconditions

you can use only one in contact template, because only contact shortcodes are available:
{CONTACT_GDPR_LINK}

But those links can be needed in signup template too and as values for example in signup text:

And they could be used f.e. in cookies plugin.

Actual solution from contact plugin is in fact "hardcoded" by using LANs.
define("LANCONTACT_23", "You can find our privacy policy here: [x]");

PS. Not urgent.