Fix: Revert removal of file argument

[localheinz]

This PR

• reverts the removal of the file argument

Reverts #151.
Reverts #164.
Follows #166.

[codecov]

Codecov Report

Merging #168 into master will increase coverage by 1.99%.
The diff coverage is 100%.

@@             Coverage Diff              @@
##             master     #168      +/-   ##
============================================
+ Coverage     79.87%   81.86%   +1.99%     
- Complexity       31       34       +3     
============================================
  Files             2        2              
  Lines           164      182      +18     
============================================
+ Hits            131      149      +18     
  Misses           33       33

Impacted Files	Coverage Δ	Complexity Δ
src/Command/NormalizeCommand.php	87.13% <100%> (+1.51%)	31 <1> (+3)	⬆️

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