[security.adoc & security-builtin-authentication.adoc] Create a how-to.adoc for a general advise on the authentication mechanism selection

Create a dedicated section about general advise on the authentication mechanism selection - for example, we can have a table matching requirements with suggested authentication mechanisms, like:

• Token authentication required <-> OIDC or JWT authentication mechanism, where OIDC and JWT being links to corresponding OIDC and JWT guides.
   
• Or username and password authentication <> Basic or Form, or Single SignOn <> OIDC, etc.

• ex Name and password: Basic, Form where Basic and Form are links, Bearer access token: OIDC, Client Certificate: MTLS, etc

In other words:
Create a table like that one which will provide a general match between the auth requirement and the actual mechanism which can be used