Issue104/add block inside map

[kn65op]

Adds blocks inside map each 2 tiles.
Fix #104

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This change is 

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@757b511). Click here to learn what that means.
The diff coverage is 90.9%.

@@            Coverage Diff            @@
##             master     #128   +/-   ##
=========================================
  Coverage          ?   83.87%           
=========================================
  Files             ?       78           
  Lines             ?     1141           
  Branches          ?        0           
=========================================
  Hits              ?      957           
  Misses            ?      184           
  Partials          ?        0

Impacted Files	Coverage Δ
src/game/WallPositionsGenerator.hpp	0% <ø> (ø)
src/game/BoundaryWallsPositionsGenerator.ut.cpp	100% <ø> (ø)
src/game/BombermanGameWorld.cpp	0% <0%> (ø)
src/game/WallPositionsGeneratorComposite.ut.cpp	100% <100%> (ø)
src/game/WallPositionsGeneratorComposite.cpp	100% <100%> (ø)
src/game/InsideWallsPositionsGenerator.ut.cpp	100% <100%> (ø)
src/game/InsideWallsPositionsGenerator.cpp	100% <100%> (ø)
src/game/WallsPositionGeneratorCommon.ut.hpp	100% <100%> (ø)

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