Adds VectorNonlinearOracle support

[andrewrosemberg]

Adds VectorNonlinearOracle support by creating a bridge for the nonlinear backend

[codecov]

Codecov Report

❌ Patch coverage is 0.93023% with 213 lines in your changes missing coverage. Please review.
✅ Project coverage is 79.88%. Comparing base (dc86850) to head (19b4889).
⚠️ Report is 3 commits behind head on master.

Files with missing lines	Patch %	Lines
src/NonLinearProgram/vno_bridge.jl	0.00%	211 Missing ⚠️
src/ConicProgram/ConicProgram.jl	0.00%	2 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (dc86850) and HEAD (19b4889). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (dc86850)	HEAD (19b4889)
	3	2

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #334      +/-   ##
==========================================
- Coverage   89.13%   79.88%   -9.25%     
==========================================
  Files          16       17       +1     
  Lines        1961     2163     +202     
==========================================
- Hits         1748     1728      -20     
- Misses        213      435     +222     

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[andrewrosemberg]

There is only one issue. if I create a model with diff_optimizer it defaults to use conic backend even though it is not compatible with vno. Trying to figure out how to avoid this.

[joaquimg]

I'd like @blegat 's eyes on it.
For now, can we move the tests to seperate file only for VNO?