add quadratic term in objective of conic term

[matbesancon]

No description provided.

[codecov]

Codecov Report

Merging #27 (fe09980) into master (4652d04) will increase coverage by 0.08%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #27      +/-   ##
==========================================
+ Coverage   85.80%   85.89%   +0.08%     
==========================================
  Files           5        5              
  Lines         317      319       +2     
==========================================
+ Hits          272      274       +2     
  Misses         45       45              

Impacted Files	Coverage Δ
src/conic_form.jl	77.55% <100.00%> (+0.46%)	⬆️

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[matbesancon]

I added some tests but didn't get in MOI_copy_to where the objective is set, it is failing for now

[matbesancon]

ping @blegat on that. Not sure where in copy_to is the objective copied