docs: add guide for tincan analytics
docs: add guide for tincan analytics

Updated version of <https://apereo.atlassian.net/wiki/spaces/UPM41/pages/103942294/TinCan+API+Configuration+4.2+>

mgillian/uPortal,Jasig/uPortal,ChristianMurphy/uPortal,groybal/uPortal,groybal/uPortal,bjagg/uPortal,cousquer/uPortal,bjagg/uPortal,Jasig/uPortal,ChristianMurphy/uPortal,groybal/uPortal,groybal/uPortal,jonathanmtran/uPortal,jonathanmtran/uPortal,jonathanmtran/uPortal,cousquer/uPortal,Jasig/uPortal,bjagg/uPortal,groybal/uPortal,ChristianMurphy/uPortal,mgillian/uPortal,cousquer/uPortal,mgillian/uPortal