Enforce LF line endings

[aobolensk]

To keep the code base consistent, let's keep LF line endings (disallow CRLF) everywhere

[codecov]

Codecov Report

❌ Patch coverage is 85.47170% with 77 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.95%. Comparing base (7312711) to head (1a3ec17).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
include/layers/ConvLayer.hpp	87.05%	6 Missing and 27 partials ⚠️
include/parallel/backends.hpp	72.22%	2 Missing and 13 partials ⚠️
src/layers/FlattenLayer.cpp	82.35%	7 Missing and 2 partials ⚠️
src/layers/ConvLayer.cpp	92.30%	5 Missing and 3 partials ⚠️
include/layers/FlattenLayer.hpp	80.00%	0 Missing and 4 partials ⚠️
include/parallel/parallel.hpp	86.95%	0 Missing and 3 partials ⚠️
src/layers/DropOutLayer.cpp	84.21%	2 Missing and 1 partial ⚠️
include/layers/DropOutLayer.hpp	50.00%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #273   +/-   ##
=======================================
  Coverage   83.95%   83.95%           
=======================================
  Files          56       56           
  Lines        3097     3097           
  Branches     1855     1855           
=======================================
  Hits         2600     2600           
  Misses        245      245           
  Partials      252      252           

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