[WIP] Implement SolverLogger

[abelsiqueira]

Related to #151

[codecov[bot]]

Codecov Report

Merging #153 (88736be) into master (d12db21) will decrease coverage by 6.81%. The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #153      +/-   ##
==========================================
- Coverage   90.76%   83.95%   -6.82%     
==========================================
  Files          10       11       +1     
  Lines         260      243      -17     
==========================================
- Hits          236      204      -32     
- Misses         24       39      +15     

Impacted Files	Coverage Δ
src/SolverTools.jl	100.00% <ø> (ø)
src/auxiliary/solver-logger.jl	0.00% <0.00%> (ø)
src/trust-region/trust-region.jl	52.17% <0.00%> (-5.52%)	:arrow_down:
src/auxiliary/logger.jl	85.71% <0.00%> (-0.96%)	:arrow_down:
src/stats/stats.jl	91.04% <0.00%> (-0.85%)	:arrow_down:
src/linesearch/armijo_wolfe.jl	85.71% <0.00%> (-0.50%)	:arrow_down:
src/auxiliary/bounds.jl	97.05% <0.00%> (-0.38%)	:arrow_down:
src/auxiliary/blas.jl	100.00% <0.00%> (ø)
src/linesearch/line_model.jl	100.00% <0.00%> (ø)
src/trust-region/tron-trust-region.jl	100.00% <0.00%> (ø)
... and 2 more

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