Make sure there no multiple empty lines and every file ends with a new line

[siri-varma]

Description

Disable multiple empty lines

Issue reference

We strive to have all PR being opened based on an issue, where the problem or feature have been discussed prior to implementation.

Please reference the issue this PR will close: #1303

Checklist

Please make sure you've completed the relevant tasks for this PR, out of the following list:

• Code compiles correctly
• Created/updated tests
• Extended the documentation

[artur-ciocanu]

Wonderful!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.51%. Comparing base (d759c53) to head (1dc376d).
Report is 170 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1417      +/-   ##
============================================
+ Coverage     76.91%   78.51%   +1.59%     
- Complexity     1592     1867     +275     
============================================
  Files           145      230      +85     
  Lines          4843     5790     +947     
  Branches        562      601      +39     
============================================
+ Hits           3725     4546     +821     
- Misses          821      924     +103     
- Partials        297      320      +23     

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