fixing issues with package installation

[IvanOleksiyuk]

Whe installing package from PYPi ti does not work as modules classes and steps are not instaled. I add this to projecttoml and also make steps a module by adding __init__.py

[codecov[bot]]

Codecov Report

Merging #34 (723e938) into main (02f80fa) will not change coverage. The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main      #34   +/-   ##
=======================================
  Coverage   93.31%   93.31%           
=======================================
  Files          15       15           
  Lines         942      942           
=======================================
  Hits          879      879           
  Misses         63       63           

Files	Coverage Δ
upp/__init__.py	100.00% <100.00%> (ø)

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[samvanstroud]

Thanks @IvanOleksiyuk, do you want to also update the __version__ in this MR so we can publish a new release?

[IvanOleksiyuk]

Thanks for reminder to update version