skip OCS parsing when status == NO CONTENT

[bigcat88]

This code were not working:

nc.ocs("GET", "/ocs/v2.php/core/whatsnew")

this PR fixes it, for OCS that return Http::STATUS_NO_CONTENT we return empty list.

In addition added ALL API scope, ref: nextcloud/app_api/pull/190

Previous commit: 8fd175a was added fast to just implement ALL API scope tests in AppAPI repo.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (8fd175a) 99.82% compared to head (b42948c) 99.84%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #197      +/-   ##
==========================================
+ Coverage   99.82%   99.84%   +0.02%     
==========================================
  Files          39       39              
  Lines        4599     4603       +4     
==========================================
+ Hits         4591     4596       +5     
+ Misses          8        7       -1     

Files	Coverage Δ
nc_py_api/_session.py	100.00% <100.00%> (+0.32%)	⬆️
nc_py_api/ex_app/defs.py	100.00% <100.00%> (ø)