[#295] Added support for the prefixes

[MSattrtand]

Resolves #295

[blcham]

see my comment, please make dependance on spin as small as possible.

Make following method:
QueryUtils.getQueryWithModelPrefixes(String query, Model model)

Make 2 tests of this method:

• getQueryWithModelPrefixes includes all prefixes from the query
• getQueryWithModelPrefixes includes all prefixes from the model

[blcham]

Those tests are very long and hard to read ... We are reusing staff from different PRs which does not make sense to use in this PR , e.g why are we reusing this query:

            CONSTRUCT {
              ?airport__previous airports_from_query1:is-before-airport ?airport .
            } WHERE {
            
              #${VALUES}
            }

We have CONSTRUCT query with #${VALUES} -- this is confusing
This is also super confusing in this context ?airport__previous airports_from_query1:is-before-airport ?airport .

So why not having super easy CONSTRUCT query that makes sense, i don't know, e.g.

CONSTUCT {
 ?p a model-prefix:Person .
WHERE {
  ?p a query-prefix:Person .
}

[blcham]

@MSattrtand have a look at my last two commits:

[blcham]

LGTM, see my comments above.