If verbosity > 0, print the name of the selected solver when fit! is called

[DilumAluthge]

No description provided.

[codecov-commenter]

Codecov Report

Merging #114 (d835cf8) into dev (0e19298) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##              dev     #114   +/-   ##
=======================================
  Coverage   96.05%   96.06%           
=======================================
  Files          21       21           
  Lines         861      863    +2     
=======================================
+ Hits          827      829    +2     
  Misses         34       34           

Impacted Files	Coverage Δ
src/mlj/interface.jl	88.70% <100.00%> (+0.37%)	⬆️

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[DilumAluthge]

@tlienart @ablaom This is now ready for review.

[ablaom]

Sounds reasonable to me. By default (verbosity=1) MLJ tends to be somewhat verbose, so this is consistent.