feat: store ODRL authorization policy and allow public read

[mirdono]

Insert the app's authorization policy into the triplestore and the data publicly readable.

A migration inserts the data into a new graph, http://mu.semte.ch/graphs/odrl-authorization-policy, to keep it separate from other data and to make any future updates easier.
The sparql-parser configuration is extended with entities covering the different resources types in an ODRL authorization policy (i.e. itself). Note, there was already an asset defined for SHACL node shapes, so this was reused.

How to test

0. Checkout the branch of this PR
1. Restart the database service to load the updated policy
2. Restart the migrations service to execute the added migration
3. Browse to the yasgui frontend's mock-login and login: http://yasgui.localhost/mock-login
4. Querying for data for ODRL data should give as results the data in the authorization policy. For example, the following query should list all triples for the defined ODRL asset collections.

PREFIX odrl: <http://www.w3.org/ns/odrl/2/>
SELECT DISTINCT ?s ?p ?o
WHERE {
  ?s a odrl:AssetCollection ;
    ?p ?o .
}

Related tickets

• LBRON-1459