feat!: add initial support for query parameters to exploreDirectory method

[JKRhb]

As currently discussed in w3c/wot-scripting-api#528, this PR adds initial experimental support for the three query parameters offset, limit, and format to the exploreDirectory method.

At the moment only the format value array is supported, with the value collection left open for a follow-up PR. While implementing, however, I noticed that the current approach does not allow for an elegant passing of the next links (from the HTTP response headers) to the upper layers of the library.

Not only in the context of dart_wot but also for node-wot we could therefore discuss expanding the Content class/interface to be able to pass this information alongside the payload data. However, there is probably some discussion needed to do this in a protocol-agnostic manner.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (7adfed6) 67.24% compared to head (17334a9) 67.37%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #94      +/-   ##
==========================================
+ Coverage   67.24%   67.37%   +0.12%     
==========================================
  Files          69       70       +1     
  Lines        2265     2274       +9     
==========================================
+ Hits         1523     1532       +9     
  Misses        742      742              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.