Add rnp_signature_get_features

[kaie]

No description provided.

[ni4]

@kaie Thanks for the submission! Could you please add the following test calls (as I cannot push to your fork) to make codecov happier:

assert_rnp_failure(rnp_signature_get_features(NULL, &features));
assert_rnp_failure(rnp_signature_get_features(sig, NULL));

[kaie]

@kaie Thanks for the submission! Could you please add the following test calls (as I cannot push to your fork) to make codecov happier:

assert_rnp_failure(rnp_signature_get_features(NULL, &features));
assert_rnp_failure(rnp_signature_get_features(sig, NULL));

good suggestion, done

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (3d1a3d5) 77.24% compared to head (2ce007a) 77.24%.

Files	Patch %	Lines
src/lib/rnp.cpp	75.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2188   +/-   ##
=======================================
  Coverage   77.24%   77.24%           
=======================================
  Files         194      194           
  Lines       37731    37742   +11     
=======================================
+ Hits        29145    29154    +9     
- Misses       8586     8588    +2     

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[ni4]

LGTM, thanks!

[maxirmx]

+1

[ni4]

Thank you guys!
Two approvals == merge.