add 'loggedIn' permission type

[bjdmeest]

right now the 'public' permission type actually only works for logged in people eg

<#7d85dcfb-b26b-4183-b860-73b7c6d63309> a <http://www.w3.org/ns/auth/acl#Authorization>;
    <http://www.w3.org/ns/auth/acl#mode> <http://www.w3.org/ns/auth/acl#Read>;
    <http://www.w3.org/ns/auth/acl#accessTo> <https://pod.playground.solidlab.be/user6/index.json>;
    <http://www.w3.org/ns/auth/acl#agentClass> <http://xmlns.com/foaf/0.1/Agent>. #so this is only for logged in users

Add a loggedIn permission type for this functionality, and update the public permission type to be actually public (ie also without needing to log in)

[NuttyShrimp]

I've taken a quick look at the acl definitions, but I can't seem to find a valid definition to allow people to access a file without logging in.
I've tried the following but without much luck

<#public> a acl:Authorization;
    acl:accessTo <https://pod.playground.solidlab.be/user9/README>;
    acl:mode acl:Read.

[bjdmeest]

I'm not sure how it works (but you could inspect the ACL later), but https://docs.inrupt.com/developer-tools/javascript/client-libraries/tutorial/manage-wac/#set-public-access seems to promise this functionality, no?

[NuttyShrimp]

So to clarify after our messages yesterday.

• A new subject should be introduced "loggedIn", this shouldn't replace any existing at this point
• The subject should control 1 entry in the ACL file. Where the acl:AgentClass equals acl:AuthenticatedAgent.
• At this moment the inrupt SDK does support agent classes but does not contain a public facing function to add/edit an entry with a custom agent.