Implement getter of ConstraintFunction/Set for RSOC

[blegat]

No description provided.

[codecov-io]

Codecov Report

Merging #742 into master will increase coverage by 0.01%.
The diff coverage is 94.59%.

@@            Coverage Diff             @@
##           master     #742      +/-   ##
==========================================
+ Coverage   94.26%   94.27%   +0.01%     
==========================================
  Files          56       56              
  Lines        6170     6201      +31     
==========================================
+ Hits         5816     5846      +30     
- Misses        354      355       +1

Impacted Files	Coverage Δ
src/Test/UnitTests/basic_constraint_tests.jl	97.61% <ø> (ø)	⬆️
src/Bridges/rsocbridge.jl	100% <100%> (ø)	⬆️
src/Utilities/functions.jl	95% <92.85%> (+0.07%)	⬆️

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