Use a CachingOptimizer for the MIP solver and test Cbc

[odow]

For the motivation of this, read:

• Update to MOI v1.0 lanl-ansi/Alpine.jl#188 (comment)
• Instantiate with cache if needed MathOptInterface.jl#1776

cc @blegat

[codecov]

Codecov Report

Merging #62 (d3c34c6) into master (594c334) will increase coverage by 0.09%.
The diff coverage is 70.00%.

@@            Coverage Diff             @@
##           master      #62      +/-   ##
==========================================
+ Coverage   87.65%   87.74%   +0.09%     
==========================================
  Files           4        4              
  Lines         632      653      +21     
==========================================
+ Hits          554      573      +19     
- Misses         78       80       +2     

Impacted Files	Coverage Δ
src/MOI_wrapper.jl	85.86% <70.00%> (+0.60%)	⬆️
src/cut_utils.jl	95.91% <0.00%> (-0.72%)	⬇️
src/optimize.jl	85.37% <0.00%> (-0.26%)	⬇️
src/infeasible_nlp.jl	100.00% <0.00%> (ø)

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[chriscoey]

Hmm I suppose MOIPajarito needs something similar?