[new] Migration guide to Lock v10 in install page
[new] Migration guide to Lock v10 in install page

- Provide instructions for new users an users that are upgrading.
- Detail what has changed.

hamzawi06/docs,khorne3/docs,Catografix/docs,Catografix/docs,jeffreylees/docs,Annyv2/docs,Annyv2/docs,hamzawi06/docs,khorne3/docs,jeffreylees/docs,Catografix/docs,yvonnewilson/docs,sandrinodimattia/docs,auth0/docs,hamzawi06/docs,auth0/docs,Annyv2/docs,sandrinodimattia/docs,khorne3/docs,yvonnewilson/docs,sandrinodimattia/docs,auth0/docs,jeffreylees/docs,yvonnewilson/docs