Extentions to MBM and cutting planes techniques.

[dnguyen227]

This PR makes changes to extend MBM and cutting planes techniques.

MBM

• copy_model_with_constraints(::InfiniteModel, ...)
• prepare_max_M_objective(::InfiniteModel, ...) (LessThan + GreaterThan)
• raw_M(sub, ::Vector{<:AbstractJuMPScalar}, ::_MBM)

Cutting Planes

• copy_and_reformulate(::InfiniteModel, ..., ::CuttingPlanes)
• extract_solution(::InfiniteModel)
• add_cut(::InfiniteModel, ...)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.51%. Comparing base (eca54be) to head (d053c07).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #135      +/-   ##
==========================================
+ Coverage   99.38%   99.51%   +0.13%     
==========================================
  Files          17       17              
  Lines        1959     2079     +120     
==========================================
+ Hits         1947     2069     +122     
+ Misses         12       10       -2     

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